Simple math problems give 10 points

Enthusiastic netizens The sum of the monomial-4ab, 3ab, -b is (-4ab +3ab-b), it is (3) times (3) terms; 3x -4 is (3) times (2) terms; 3x-2x-4 is (3) times (3) terms; The constant term of -x-2 is (-2) a-5a b +3ab+1 is (5) times (4) terms, the highest term is (5) the coefficient of the highest order term is (5), and the constant term is (1); 2x-3 x +8 is (3) times (3) terms, the second term is ( -3 x ) and its coefficient ( 3 ) can also be done like this: -4ab +3ab-b cubic trinomial 3x -4 is (3) times (2) terms; 3x-2x-4 is (3) times (3) terms; The constant term of -x-2 is (-2) a-5a b +3ab+1 is (5) times (4), the highest term is (-5a b) the coefficient of the highest term is (-5), and the constant term is (1); 2x-3 x +8 is the (3) second term (-3x) and its coefficient (-3

The sum of the monomial-4ab, 3ab, -b is (-4ab +3ab-b), it is (3) times (3) terms; 3x -4 is (3) times (2) terms; 3x-2x-4 is (3) times (3) terms; The constant term of -x-2 is (-2) a-5a b +3ab+1 is (5) times (4) terms, the highest term is (5) the coefficient of the highest order term is (5), and the constant term is (1); 2x-3 x +8 is the (3) second term (-3x) and its coefficient (-3

4ab +3ab-b cubic trinomial 3x -4 is (3) times (2) nominal; 3x-2x-4 is (3) times (3) terms; The constant term of -x-2 is (-2) a-5a b +3ab+1 is (5) times (4), the highest term is (-5a b) the coefficient of the highest term is (-5), and the constant term is (1); 2x-3 x +8 is the (3) second term (-3x) and its coefficient (-3

1. Square meters.

2. Set A to have x tons and B to have (560-x) tons.

2×（1-1/4）x=560-x+80

x=256 This is A's.

560-256 = 304 tons This is B's.

Warehouse B puts another 80 tons in the warehouse, if that's right.

.Question 2:

Let warehouse A be x tons and warehouse B (560-x) tons.

2（x-1\4x)=(560-x)+80

x=256B: 560-256=304

I gave up, too many people.

1. Let the sum of the upper and lower bottoms of the trapezoid be x, and the height is y, then xy=, 6 5x2 3y=4 5xy=, so now the trapezoidal area is.

2. If warehouse A has x tons, then warehouse B has 560-x tons.

Then we get: x+560x1 4=2(560-x-80)x=820 3,

1.Let the original upper bottom be A, the lower bottom is B, and the height is H, so now the upper bottom is (1+6 5)A, the lower bottom is (1+6 5)B, and the height is (1-3 1)H, so S=(11 5(A+B)x2H3) 2=22 square meters.

2.The original warehouses of A and B have x and y tons respectively.

x+y=560

3x/4)x2=y+80

The solution is x=256 and y=304

Six-fifths of the original increase? Yes"Increase to:"Right?

Process: The upper bottom, lower bottom, and height length of the trapezoidal shape are respectively set as: a, b, c1 2(a+b)c=

1/2(a+6/5a+b+6/6b)(1-1/3)c=11/5×2/3×1/2(a+b)c=s

Simplify it for a while, because you're not sure if you've made a mistake or not, and it should be able to offset it.

A ergonomics: 1 8

B Ergonomics: 1 8 * 4 5 = 1 10

A and B cooperation efficiency: 1 8 + 1 10 = 9 40

So 1 (9 40) = 40 9 (days).

The numbers are a bit ghostly, but the answer is this, believe brother.

B can only complete four-fifths of the way through sitting alone for 8 days, which means that it takes 10 days for B to do it alone, 1 (1 8 + 1 10) = 80 18 = 40 9 days.

B to complete it alone.

8 4/5 10 days.

A and B are done together, and it is necessary to complete it.

1 (1/8 1/10) 40/9 days.

If the quantity of work is 1, then A can complete 1 8 per day, and B can complete 1 10 per day

A and B cooperate, and the work is completed every day 1 8 + 1 10 = 9 40

Therefore, the number of days required is 40 9

A completes 1 8 per day

B completes (4 5) 8 = 1 10 per day

Collaboration is done every day 1 8 + 1 10 = 9 40

It takes 40-9 days.

The most annoying thing is to see people who don't analyze messing around.

Let f(x)=x 3 6+x 2 2+x-2 obviously x>0, then f(x) is an increasing function, so if there is a solution in [1,2], there must be only one solution.

Only when monotonicity is established can there be theoretical support for the rationality of the following algorithms.

Here's the algorithm:

1） a=1, b=2

f(1)=-1 3, f(2)=10 3(2) let k=(a+b) 2

3) Calculate f(k), f(k+, f(

If f(k)*f(k+<0 or f(k)*f(<0, k is what is sought.

Otherwise, (4) if f(k)=0, then k3 is the root of the equation being sought.

If f(k)>0, let k=(a+k) 2, go back to (3)If f(k)<0, let k=(b+k) 2, go back to (3).

Enter the values at both ends of the interval in the input box Calculate the cubic of x 6+x squared 2+x-2 Multiply the two values of the above equation Judge whether it is negative and judge whether the accuracy is If it is not negative, it is not in the interval If it is, narrow the interval by half Substitute the values at both ends of the interval again Judge the positive and negative until the accuracy is Then it ends Sorry to express it not very well There are still questions to hi me directly Adopt me first Thank you!

Hello landlord.

Price; 56 + 84 = 140 yuan.

Answer; The current price is 40 % lower than the original price.

84/(84+56)*100%=60%

A: That's a 60% reduction.

If you don't understand, you can continue to ask! :-d, o( o haha

56/(84+56)*100%=56/140*100%=

If I'm not mistaken, I don't do my calculations very well.

Do it with equations. It is set to be reduced by X yuan compared to the original price. (56+84)x(1-x）=84，x=

9 = (1+2) to the power of (1+1) = 3 squared 8 = 1x1 1x1

10 = (1+2) to the power of 2 plus 110 = 3 to the power (1+1) plus 1

12 = （1+2）x（1+3）

13 = 1x1 1x1 1x1

14 = 1x2 1x1 1x1

22 = 1+4)x(1+2+1+1)+1+1 There are three no, can you explain the meaning and the topic clearly?

What is an "x"? Is it a multiplier sign? Make it impossible for others to understand!

Is this a password, dear!!

I don't understand.

It's no longer within my ability, it's a mistake!!

Do you want to fill in the four symbols in the blanks?

It's really simple, wow, roar, see me answer

1970 32 = 61 surplus 18

I don't know.

120 + 10 = 130 accounts for 5 6 of the gray rabbit, so the gray rabbit has 130 (5 6) = 156, a total of 130 + 156 = 286 rabbits.

or -5 6 +2k (k is a natural number).

x is between 0 and . x= 12 can be calculated

3。 [0, 1) u (1, +

2。m=0, ab length is the largest, 4 root number 3 calculation omitted.

, you can just draw a picture.

0 and x≠1