Question

Упростить и решить 2-2b^2 --------------- 4b^2-8b+4

Answer 1

$2 - 2b {}^{2} \\ 2(1 - b {}^{2} ) \\ 2(1 - b) \times (1 + b) \\ \\ 4b {}^{2} - 8b + 4 \\ 4(b {}^{2} - 2b + 1) \\ 4(b - 1) {}^{2}$