Question

разложите на множители.

Answer 1

1)

$36 {x}^{2} - 25 {y}^{2} = (6x - 5y) \times (6x + 5y)$

2)

${x}^{2} {y}^{4} - 1 = (x {y}^{2} - 1) \times (x {y}^{2} + 1)$

3)

$81 - 64 {x}^{2} {y}^{2} = (9 - 8xy) \times (9 + 8xy)$

4)

${(x - 3y)}^{2} - 4 {x}^{2} = 3 \times ( - x - 3y) \times (x - y)$

5)

$25 {a}^{2} - (c + 4a)^{2} = (a - c) \times (9a + c)$

6)

${(2a + 7b)}^{2} - {( 3a - 5b)}^{2} = \\ = ( - a + 12b) \times (5a + 2b)$