## anonymous 5 years ago 2 √128 - √18 + 4 √32 I NEED HELP PLEASE!!!!! ITS AN EMERGENCY !!!! STEP BY STEP PLEASE!!!!!

1. anonymous

$\sqrt{128}=\sqrt{16*4*2}=4*2\sqrt{2}=8\sqrt{2}$ $\sqrt{18}=\sqrt{9*3}=3*\sqrt{3}$ $\sqrt{32}=\sqrt{16*2}=4\sqrt{2}$ now, combine like terms...

2. anonymous

mistake...sorry.. $\sqrt{18}=\sqrt{9*2}=3\sqrt{2}$ your answer: $16\sqrt{2}-3\sqrt{2}+16\sqrt{2}=29\sqrt{2}$