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Popular >

factor 81-4y^2

Solution

factor

81 - 4 y^{2}

Solution

(9 + 2 y) (9 - 2 y)

Solution steps

81 - 4 y^{2}

Apply exponent rules

= 9^{2} - (2 y)^{2}

Apply Difference of Two Squares Formula:

x^{2} - y^{2} = (x + y) (x - y)

9^{2} - (2 y)^{2} = (9 + 2 y) (9 - 2 y)

= (9 + 2 y) (9 - 2 y)

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Frequently Asked Questions (FAQ)

What is factor 81-4y^2 ?
The solution to factor 81-4y^2 is (9+2y)(9-2y)