Factorization of (a + b) ^ 2Y + (a + b) y ^ 2

Factorization of (a + b) ^ 2Y + (a + b) y ^ 2

Is the first factor y a coefficient? If so, the answer is the original formula = (a + b) y [(a + b) + y]

On the method of extracting common factor
How to calculate the 101st power of (- 2) + the 100th power of (- 2)? Is the square of 99 + 99 - 300

101th power of (- 2) + 100th power of (- 2)
=The 100th power of (- 2) × the 100th power of 2 + (- 2)
= 100th power of (- 2) × (2 + 1)
= 100th power of (- 2) × 3
Square of 99 + 99
＝99×（99+1）
＝99×100
＝9900

The method of extracting common factor in the seventh grade of Mathematics
4a（x+y-z）+10a²（z-x-y）
If AB = 1, a + B = - 2007, then a & # 178; B + AB & # 178; =?

The first question is a (x + Y-Z) (4-10a)
The second question is a & # 178; B + AB & # 178; = AB (a + b), so it is equal to - 2007