vivalakoda
Radicals help!



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elisichi
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What can I help you with?

vivalakoda
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(7+√2)(83√2)

Arhin
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54+root2

CliffSedge
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^incorrect.

vivalakoda
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I'm not necessarily looking for an answer, more of an explanation so I can understand the problem. Thank Arhin, anyway..

vivalakoda
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Thanks*

CliffSedge
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FOIL
First Outer Inner Last
\(\huge (a+b)(c+d) = ac+ad+bc+bd\)

Arhin
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sorry typing mistake

elisichi
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\[(7+√2)(83√2) = 5421\sqrt{2}+ 8\sqrt{2} (2)(3)=5413\sqrt{2}6 = 4813\sqrt{2}\]Ok so what you do is you expand.

Arhin
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@elisichi is rather50 −13√2

elisichi
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^whoops. my bad. 7 *8= 56. Youre right

vivalakoda
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I think I understand now. Thank you!

elisichi
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No problem!

Arhin
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@elisichi well done