Question

Срочно! отдаю все балы

Answer 1

Ответ:

удачки!!

$1)(x - 5)(x + 5) = {x}^{2} - 25 \\ 2)(2x + 7)(2x - 7) = 4 {x}^{2} - 49 \\ 3)(a - b)(a + b) = {a}^{2} - {b}^{2} \\ 4)(9x + 1)(9x - 1) = 81 {x}^{2} - 1 \\ 5)(x + 3) {}^{2} = {x}^{2} + 6x + 9 \\ 6)(9 - a) {}^{2} = 81 - 18a + {a}^{2} \\ 7)(3y + 5) {}^{2} = 9 {y}^{2} + 30y + 25 \\ 8) (8x {}^{2} - 2) {}^{2} = 64 {x}^{4} - 32 {x}^{2} + 4 \\ 9)(12a - 3b) {}^{2} = 144 {a}^{2} - 72ab + 9 {b}^{2} \\ 10)(11y - 4) {}^{2} = 121 {y}^{2} - 88y + 16 \\ 11)4 {a}^{2} - 4ab + b {}^{2} = (2a - b) {}^{2} \\ 12)9 {a}^{2} - 6x + 1 = (3a - 1) {}^{2}$