Identify the pattern that can be used to factor the high-degree polynomial y4−8y2+16

Question

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Pattern #1: (a+b)2=a2+2ab+b2


Pattern #2: (a−b)2=a2−2ab+b2


Pattern #3: (a−b)(a+b)=a2−b2

Answer 1

In this case, the pattern that can be used to factor the high-degree polynomial is Pattern #2: (a−b)2=a2−2ab+b2