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What is the expression (a^2+b^2)^2 is equivalent to

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( a^(2) + b^(2) )^(2)

( a^(2) + b^(2) )( a^(2) + b^(2) )

(a^(4)+a^(2)b^(2)+a^(2)b^(2)+b^(4))

(a^(4)+2a^(2)b^(2)+b^(4))
User Crasp
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3 votes
(a^2+b^2)^2
since (a+b)^2=a^2+2ab+b^2, substitute a with a^2 and b with b^2, which yields:
a^4+2(a^2*b^2)+b^4
User Rinsad Ahmed
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