Question

b²-y²
b²-25
25n²-c²
10a+10b
9+9b
15y-25x
6b+xb
​

Answer 1

Объяснение:

1).

${b}^{2} - {y}^{2} = (b - y)(b + y)$

2).

${b}^{2} - 25 = (b - 5)(b + 5)$

3).

$25 {n}^{2} - {c}^{2} = (5n - c)(5n + c)$

4).

$10a + 10b = 10(a + b)$

5).

$9 + 9b = 9(1 + b)$

6).

$15y - 25x = 5(3y - 5x)$

7).

$6b + xb = b(6 + x)$