Question
Subtract $-5 a^{2} b^{4}-8 a b^{2}-a b$ from $3 a^{2} b^{4}-5 a b^{2}+7 a b$.
Step 1
Step 1: First, we rewrite the subtraction as an addition of the opposite: $$3 a^{2} b^{4}-5 a b^{2}+7 a b - (-5 a^{2} b^{4}-8 a b^{2}-a b)$$ becomes $$3 a^{2} b^{4}-5 a b^{2}+7 a b + 5 a^{2} b^{4}+8 a b^{2}+a b$$ Show more…
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$$\begin{aligned} \text { Subtract: } & 3 a^{2} b^{4}-5 a b^{2}+7 a b \\ &=\left(-5 a^{2} b^{4}-8 a b^{2}-a b\right) \\ \hline \end{aligned}$$
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