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Solve the following
Answer
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Graph
$y = x ^ { 4 } - x ^ { 2 } - 20$
$y = 0$
$x$Intercept
$\left ( \sqrt{ 5 } , 0 \right )$, $\left ( - \sqrt{ 5 } , 0 \right )$
$y$Intercept
$\left ( 0 , - 20 \right )$
$x = - \sqrt{ 5 } , \sqrt{ 5 } $
Calculate the value
$x ^ { 4 } - x ^ { 2 } - 20 = 0$
$ $ Solve $ $ $ $ the $ $ $ $ equation. $ $
$x = - \sqrt{ 5 } , \sqrt{ 5 } $
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