Question

расположение на множители 5a^2b^2-45a^2c^2

Answer 1

Объяснение:

$5a {}^{2} b {}^{2} - 45a {}^{2} c {}^{2} =5\left(a^{2}b^{2}-9a^{2}c^{2}\right) =a^{2}\left(b^{2}-9c^{2}\right) =\left(b-3c\right)\left(b+3c\right) =5a^{2}\left(b-3c\right)\left(b+3c\right)$