Question

Разложить на множители:

36a²-81
25x²-10xy+y²
16x²+9x²+24xy

Answer 1

$36a {}^{2} - 81 = 9(2a - 3)(2a + 3) \\ 25x {}^{2} - 10xy + y {}^{2} = (5x - y) {}^{2} \\ 16x {}^{2} + 9x {}^{2} + 24xy = x(25x + 24y)$

Answer 2

36a²-81= (6а-9)(6а+9)

25x²-10xy+y²  = (5х -у)² = (5х -у)(5х -у)

16x²+9у²+24xy = (4х+3у)² = (4х+3у)(4х+3у)