Question

Помогите пожалуйста срочно!!!!

Answer 1

$1.1)(x - 2) {}^{2} = x {}^{2} - 4x + 4 \\ 2)(3m + 9n) {}^{2} = 9m {}^{2} + 54mn + 81n {}^{2} \\ 3)(c + 8)(c - 8) = c {}^{2} - 64 \\ 4)(2a + 5b)(5b - 2a) = 25b {}^{2} - 4a {}^{2}$

$2.1)100 - a {}^{2} = (10 - a)(10 + a) \\ 2)x {}^{2} + 10x + 25 = (x + 5) {}^{2} \\ 3)(c + 8)(c - 8) = c {}^{2} - 64 \\ 16a {}^{2} - 24ab + 9b {}^{2} = (4a - 3b) {}^{2}$

$3.(m - 1)(m + 1) - (m - 3) {}^{2} \\ m {}^{2} - 1 - (m {}^{2} - 6m + 9) \\ m {}^{2} - 1 - m {}^{2} + 6m - 9 \\ - 10 + 6m$