Помогите по братски 1 и 2

Question

Помогите по братски 1 и 2

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Answer 1

1)
f(x)=x³
f(5)=5³=125
f(-1)=(-1)³=-1
f(1/3)=(1/3)³=1/9
f(-2.1)=(-2.1)³=-9.61