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Basic Math
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Integers & Absolute Values
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Example
3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b
Question
$$2\sqrt{2}-\sqrt{8}$$
Evaluate
$0$
Solution Steps
Factor $8=2^{2}\times 2$. Rewrite the square root of the product $\sqrt{2^{2}\times 2}$ as the product of square roots $\sqrt{2^{2}}\sqrt{2}$. Take the square root of $2^{2}$.
$$2\sqrt{2}-2\sqrt{2}$$
Combine $2\sqrt{2}$ and $-2\sqrt{2}$ to get $0$.
$$0$$
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