Question

упрости выражение:
$( - a {}^{4} ) {}^{5} \times 7a {}^{9}$
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Answer 1

Ответ:

$( - a {}^{4} ) {}^{5} \times 7a {}^{9} = - (a {}^{4} ) {}^{5} \times 7a {}^{9} = - a {}^{20} \times 7a {}^{9} = - a {}^{20 + 9} \times 7 = - a {}^{29} \times 7 = - 7a {}^{29}$

Answer 2

Объяснение:

$( - a {}^{4} ) {}^{5} \times 7a {}^{9}=\left(-1\right)^{5}\left(a^{4}\right)^{5}\times 7a^{9} =\left(-1\right)^{5}a^{20}\times 7a^{9} =-a^{20}\times 7a^{9} =-7a^{20}a^{9} =-7a^{29}$