In the second year of junior high school, it is invalid after 1 hour of urgency

Let the coordinates of c be (x,y).

Doing cd perpendicular x-axis to d shows that the triangle cdb is all equal to the triangle boa, so cd=ob=4 db=oa=3

So x=3+4=7 y=4 coordinates are (7,4).

I can't understand what questions you wrote, and according to the conditions you gave, why can't you draw any pictures.

You are absolutely wrong, according to the first sentence you can conclude that it is a rectangle, the second sentence can not come out of two points, these two points coincide.

I can't draw it if I don't have a picture.

Multiply the three numbers.

The smallest must be negative.

i.e. plus or minus positive.

Then take a -8 with the smallest negative number

Take two positive numbers, the largest is 5 2

The maximum number that gets -80 must be positive.

i.e. negative plus minus.

Instead, take a maximum positive number of 5

Take the two smallest negative numbers, i.e. -8 -3

Get 120 so the result is -80 +120

To get the smallest product, you can only take one minimum negative number and two maximum positive numbers, so take -8, 2, 5, and the minimum product = (-8)*5*2=-80.

To get the maximum product, you can only take one maximum positive number and two minimum negative numbers, so take -3, -8, 5

Maximum product = (-8) * (3) * 5 = 120

1) The minimum product (-8)*5*2=-80 can be obtained by extracting the combination with an odd number of negative numbers and the larger absolute value

2) The maximum product (-8)*(3)*5=120 can be obtained by extracting the combination with an even number of negative numbers and the larger absolute value

(1) 2*5*(-8)=-80 is the smallest.

2) (-3) * (8) * 5 = 120 maximum.

19 and 17/18 6 = -119 and 2/3 -36 (1/2 - 1 2/3 - 5/6) = -36 (3/6 - 6/6 + 4/6 - 5/6) = -36 (-2/3).

24 (-20) (7/12-5/6 3/4) (6) = (-20) (7/2 + 5-9/2).

19 and 13/14 (-14).

(1) Extract +2, +5, -8, and their product is -80;

2) Draw -3, +5, -8 and their product is 120

Multiply three numbers.

Minimum: +2 +5 -8 The product is -80 Max: -3 +5 -8 The product is 120Supplementary question answer:

1)-119 and 2/3

(1) -8, 5, 2 three sheets, minimum product = -80

2) -8, -3, 5 three sheets, maximum product = 120

Hope it helps.

If you have any questions, you can follow up.

Thank you for adopting.

The product is minimum: -8, +5, +2 should be -80

Maximum product: -8, -3, +5 values should be 120

Minimum: +2 +5 -8 The product is -80

Maximum: -3 +5 -8 The product is 120

+2 +5 -8 product is -80 minimum.

The product of 3 +5 -8 is the maximum of +120.

(1) +2, +5, -8, their product is -80(2) -3, +5, -8, their product is 120 question supplement (1) -119 and 2/3

Draw +2, +5, -8 and the minimum product is -80

Draw -3, +5, -8 product up to 120

Turning algebra scores into false scores and then calculating, the method of doing the questions is the most critical.

Root No. 14 7

3 times the root number 7, three times the root number 8, minus five times the root number, thirty-two = 6 times the root number, 2 minus 20 times, the root number 2 = -14 times the root number, 2 times

Root number forty minus five times the root number tenths plus root number ten = root number 14 + 1 2 times root number 10

Root number 5 root number 20 plus root number 5 sum minus 2 = root number 5, root number 12 thirds plus root number 27 sum = 2 plus 3 times root number 3 times root number 12 plus 3 times root number 48 = 16 times root number 3

1. The root of the seventh is number fourteen.

2 triple the root number seven.

3 minus seven times the root number eight.

4 Sevenths times the root number ten.

5 root number five. 6 two plus three times the root number three.