Decomposition factor 1 a b b a 2 m n 4m

1, the original formula = (a-b+b+a)(a-b-b-a)=-4a b 2Original formula = (m+n+2m)(m+n-2m) = (3m+n)(n-m)3 original formula = -9a 3x 2(1-2a) (-9a 3x 2)=1-2a =(1+ 2a)(1- 2a).

4.Original formula = x (a-b) + b-a = (a-b) (x -1) = (a-b) (x+1) (x-1).

6.（3x－1/11）²=9x²-6x/11+1/121=mx²＋mnx＋1/121

m=9mn=-6/11

n=-2/33

1：(a-b)²-b+a)² =（a-b+b+a)(a-b-b-a)=2a·(-2b)=-4ab

2：(m+n)²-4m²=(m+n+2m)(m+n-2m)=(3m+n)(n-m)

3: (9a to the 3rd power x + 18a to the 5th power) divided by (9a to the 3rd power x).

9a³x²(1-2a²)÷9a³x²)

1-2a²4：ax²-bx²+b-a=x²(a-b)-(a-b)=(a-b)(x²-1)=(a-b)(x+1)(x-1)

5: 4x-(y 9) = (2x+1 3·y) (minus one-third y).

Decompose the factor(m+n-2mn)(m+n-2)+(mn-1) =(m+n) -2mn(m+n)-2(m+n)+4mn+m-2mn+1

m+n)²-2(m+n)(mn+1)+(mn+1)²=(m+n-mn-1)²

m-1)²(n-1)²

Given a+b+c=7, and (a+b)-c =14, then a+b-c=2(a+b)-c =14

a+b+c)(a+b-c)=14

a+b+c=7

a+b-c=2

They square their plus twice for their conspiracy.

2 + b2 dispense 2ab

So, 2b2 allocation + 2 + b2 allocation +1 a 2b 2 allocation 2 from the beginning 1

That is: 4ab a 2 b 2 + 2 ab +1 is: 2 b 2-2ab +1 0

ab-1）2≦0

ab-1 = 0

So, ab initio = 1

Ab initio = 1 substitution The original formula is: 1 + 2 + b 2 allocation + 1 = 4 so, 2 + b 2 allocation = 2

Out(ab) 2 = 2-2ab + b2 = 0 so, = b.

and ab = 1

So, a = 1, b = 1 or a = -1, = - 1 I want you to be happy! I hope to help you, if you don't know, please, I want to learn and progress! o（∩_o

It should be 1-a -b +2ab or 1-a -b -2ab 1-a -b liquid zen + 2ab

1-(a²-2ab+b²)

1-(a-b)²

1-a+b)(1+a-b)

1-a-b Zen Burial-2ab

1-(a²+2ab+b²)

1-(a+b)²

1-a-b)(1+a+b)

Happy New Year.