Question:
Multiply:
(a − 1) by (0.1a2 + 3)
Solution:
To multiply, we will use distributive law as follows:b
$(a-1)\left(0.1 a^{2}+3\right)$
$=0.1 a^{2}(a-1)+3(a-1)$
$=0.1 a^{3}-0.1 a^{2}+3 a-3$
Thus, the answer is $0.1 a^{3}-0.1 a^{2}+3 a-3$.
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