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How do you factor 4-y²?

Updated: 4/28/2022
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Wiki User

8y ago

Best Answer

4 - y2 can be written as 22 - y2. This has become of the form of x2 - y2.

Expansion for x2 - y2 is (x+y)(x-y).

So, 4 - y2 = 22 - y2 = (2+y)(2-y)

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Wiki User

12y ago
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Wiki User

8y ago

(2 - y)(2 + y)

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Q: How do you factor 4-y²?
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