Plz help me with it !

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asked Jul 18, 2020 145k views

5 votes

Plz help me with it !

Mathematics
middle-school

Kanchirk asked

by Kanchirk

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1 Answer

2 votes

Answer:
$\bold{-7+2√(14)+5√(7)-10√(2)}$

Explanation:

$(\sqrt7-5)/(\sqrt7+\sqrt8)\bigg((\sqrt7-\sqrt8)/(\sqrt7-\sqrt8)\bigg)=(7-2√(14)-5√(7)+10\sqrt2)/(7-8)=(7-2√(14)-5√(7)+10\sqrt2)/(-1)\\\\\\=\boxed{-7+2√(14)+5√(7)-10\sqrt2}$

Bryan Hunt answered Jul 22, 2020

by Bryan Hunt

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