Answer
$x^4+4x^2+4$
Work Step by Step
FOIL the terms in the parentheses and use the power rule to combine the exponents. Then combine like terms to simplify.
$(x^2+2)^2$
$(x^2+2)(x^2+2)$
$x^4+2x^2+2x^2+4$
$x^4+4x^2+4$
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