Question

Упростите выражение:
$5a ^{2} \times (3a {}^{3} ) {}^{2}$
$(2x {}^{2} y) {}^{3}$
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Answer 1

$5a^2\cdot (3a^3)^2=5a^2\cdot 9a^6=45\, a^8\\\\(2x^2y)^3=8x^6y^3\\\\\\\boxed {\ (x^{n})^{m}=x^{nm}\ \ ,\ \ x^{n}\cdot x^{m}=x^{n+m}}$