Question
Add:
$6 a^3,-4 a^3, 10 a^3,-8 a^3$
$6 a^3,-4 a^3, 10 a^3,-8 a^3$
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Answer
$=6 a^3+\left(-4 a^3\right)+10 a^3+\left(-8 a^3\right)$
$=\left(6 a^3+10 a^3\right)-\left(4 a^3+8 a^3\right)$
$=16 a^3-12 a^3=4 a^3$
$=\left(6 a^3+10 a^3\right)-\left(4 a^3+8 a^3\right)$
$=16 a^3-12 a^3=4 a^3$
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