因式分解:a^4-8a^2+16

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因式分解:a^4-8a^2+16

因式分解:a^4-8a^2+16
因式分解:a^4-8a^2+16

因式分解:a^4-8a^2+16
a^4-8a^2+16
=(a²-4)²
=(a+2)²(a-2)²

a^4-8a^2+16
=(a^2-4)^2
=[(a-2)*(a+2)]^2
=(a-2)^2*(a+2)^2

a^4-8a^2+16
=(a^2-4)^2
=(a-2)^2(a+2)^2

a^4-8a^2+16
=(a^2)^2-8*a^2+4^2
=(a^2-4)^2
=(a+2)^2*(a-2)^2

=(a+2)²(a-2)²
(a^2-ab)^2-(ab-b^2)^2=(a²-ab+ab-b²)(a²-ab-ab+b²)=(a+b)(a-b)³