Question
Find the value of the expression $100-10 x^3$ for $x=2$.
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Answer
The given expression is: $100-10 x^3$
Put $x=2$, we get
$100-10 x^3=100-\left(10 \times 2^3\right)$
$=100-(10 \times 8)$
$=100-80$
$=20$
Put $x=2$, we get
$100-10 x^3=100-\left(10 \times 2^3\right)$
$=100-(10 \times 8)$
$=100-80$
$=20$
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