Question

Упростите выражение:
а) -2аb3∙3а2 ∙b4; б) (-2а5b2)3

Answer 1

Ответ:

$- 2ab {}^{3} \times 3a {}^{2} \times b {}^{4} = - 6a {}^{1 + 2} b {}^{3 + 4} = \\ = - 6a {}^{3} b {}^{7} \\ ( - 2a {}^{5} b {}^{2} ) { }^{3} = ( - 2) {}^{3} \times (a {}^{5} ) {}^{3} \times (b {}^{2} ) {}^{3} = \\ = - 8a {}^{15} b {}^{6}$