Final answer to the problem
$3\sqrt{2}$
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1
Combining like terms $5\sqrt{2}$ and $-9\sqrt{2}$
$-4\sqrt{2}+7\sqrt{2}$
2
Combining like terms $-4\sqrt{2}$ and $7\sqrt{2}$
$3\sqrt{2}$
Final answer to the problem
$3\sqrt{2}$
Exact Numeric Answer
$4.242641$
