Question

СРОЧНО !!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

Ответ:

1)

$1)(x + 4) {}^{2} = (4x) {}^{2} = 16x { }^{2} \\ 2)(y - 5x) {}^{2} = (5xy) {}^{2} = 25x {}^{2} y {}^{2} \\ 3)(3a - 2)(3a + 2) = (3a) {}^{2} - {2}^{2} = 9a {}^{2} - 4 \\ 4)(c - 2b)(c + 2b) = - c \times 3b = - 3c {}^{2}$

только 1задание