F(x)=2x²+3x-4 what if the function is: f(√2)

asked Sep 20, 2015 211k views

2 votes

F(x)=2x²+3x-4
what if the function is: f(√2)

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4 votes

$f(x)=2x^2+3x-4\\\\f(\sqrt2)=2(\sqrt2)^2+3\sqrt2-4\\\\f(\sqrt2)=2*2+3\sqrt2-4\\\\f(\sqrt2)=4+3\sqrt2-4=3\sqrt2$

Rushi Soni answered Sep 22, 2015

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5 votes

$f(x)=2x^2+3x-4 \\ \\f(√(2))=2 \cdot (√(2))^2+3 \cdot √(2)-4 = 2\cdot 2+3√(2)-4=4+3√(2)-4=3√(2)$

Zany answered Sep 27, 2015

by Zany

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