Question

в ((x + 8y) - (8x + y))((x + 8y) + (8x + y)) =

Answer 1

Ответ:

(х+8у-8х-у)*(х+8у+8х+у)

(-7х+7у)*(9х+9у)

-63х²-63ху+63ху+63у²

-63х²+63у²