Simple Formula Mathematics What is the simplest form of mathematics

a+b)^2=a^2+2ab+b^2

a-b)^2=a^2-2ab+b^2

a^2-b^2=(a+b)(a-b)

a+b+c)^2=a^2+b^2+c^2+2ab+2bc+2ac

1^2+2^2+3^2+…+n 2=n(n+1)(2n+1) 6 commonly used.

1+2+3+…+n=n(n+1) 2 commonly used.

a 3 + b 3 = (a+b) (a 2-ab+b 2) cube sum (may not be so cute).

a3 - b3 = (a-b) (a2+ab+b2) cubic variance.

A 3 + b 3 + c 3 = (a + b + c)(a 2 + b 2 + c 2-ab-bc-ac) +3abc The sum of the three terms is not commonly used.

1^3 + 2^3 + n^3 = [n (n+1) / 2]^2=（1+2+……n) 2 cubes and formulas.

Question 1: What is the simplest form in mathematics What is the simplest form in mathematics 1, the simplest fraction of the numerator and denominator: there is no common factor, coprime 2, the simplest decimal: there is no 0 at the end of the decimal

3. Simplest algebraic formula: similar terms are merged in algebraic formulas.

4. The simplest fraction: the numerator and denominator of fractions have no common factor.

Question 2: The simplest form of mathematics Does it require no parentheses The decomposition of a polynomial in a range (e.g., a range of rational numbers, i.e., all terms are rational numbers) into the form of the product of several simplest formulas is called factorization, also known as factorization. It has a wide range of applications in mathematical root plotting.

Principles: 1. The decomposition must be thorough (that is, the factors cannot be decomposed after decomposition) 2. The result only leaves small parentheses at the end.

3. The first term of the polynomial of the result is positive. The common factor is extracted within a formula, that is, the common factor is reorganized through the formula, and then the common factor is extracted.

4.The first number in parentheses cannot be preceded by a negative sign;

5.If there is a multiplication of a monomial and a polynomial, the mononomial should be sailed before the polynomial. i.e. in the form of a (a+b).

Question 3: What does this math mean? 4 = 2 * 2 = 22 4 = 2 2 * 2 = 2 * 2 = 43 5 is the simplest form and cannot be simplified.

Elementary School Math Graph Calculation Formulas.

Square. c circumference.

s area. A side length.

Circumference Side length 4

c = 4a area = side length side length. s=a×a

Cube. v: volume.

A: Ridge length. Surface area = edge length Ridge length 6

S table = a a 6

Volume = edge length edge length edge length.

v=a×a×a

Rectangle. c circumference.

s area. A side length.

Circumference = (length + width) 2

c=2(a+b)

Area = length and width. s=ab

Cuboid. v: volume.

s area. A: Long. B: Wide.

H: High. (1) Surface area = (length and width + length and height + width and height) 2s = 2 (ab + ah + bh).

2) Volume = length, width and height. v=abh

Triangle. s area.

A bottom. H: High.

Area = base height 2

s=ah÷2

Triangle height = area.

2 bottoms. Triangle base = area. 2 high.

Parallelogram.

s area. A bottom.

H: High. Area = base height. s=ah

Trapezium. s area.

A top bottom. b bottom.

H: High. Area = (top bottom + bottom bottom) height 2

s=(a+b)×h÷2

Rotundity. s area. c circumference.

d = diameter. r=radius.

1) Circumference = Diameter = 2 Radius.

c=∏d=2∏r

2) Area = Radius Radius

Cylinder. v: volume.

H: High. s;Base area.

r: Radius of the bottom surface.

c: Bottom circumference.

1) Side area = bottom perimeter height.

2) Surface area = side area + bottom area 2

3) Volume = base area high.

4) Volume side area 2 radius.

Cone. v: volume.

H: High. s;Base area.

r: Radius of the bottom surface.

Volume = Base area height 3

This question tests the definition of 2.

As long as you know the definition of 2, you know that the square of 2 is equal to 2

Digital Empire is flooded with ads, but it's a calculator web page. (4*Root number two) 2=4*4*2=32. Sorry to bother alas.

Divide by 2 and then cross.

24k^2+50k+24=0, 12k^2+25k+12=0

3k+4）*（4k+3）=0

(1): Number of pages not finished = a-8b

2): Number of pages not finished = 94-8 7

(1) Read 8 pages a day, and if you read B days, it is 8b pages.

Subtract the number of pages that have been read from the total number of pages to equal the number of pages remaining: i.e. (a-8b) is the number of pages left unread.

2) We already know that there is still (a-8b) and haven't seen it, so just substitute it in.

The title has already been said, and he watched b day, and then said that he watched it for 7 days, that is to say, b = 7, you can also deduce a = 94 by yourself, and the following is the difference between substitution.

a-8b=94-8*7=38 (pages).

If there's anything you don't understand, just ask me.