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Popular >

factor 81y^2-49

Solution

factor

81 y^{2} - 49

Solution

(9 y + 7) (9 y - 7)

Solution steps

81 y^{2} - 49

Apply exponent rules

= (9 y)^{2} - 7^{2}

Apply Difference of Two Squares Formula:

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

(9 y)^{2} - 7^{2} = (9 y + 7) (9 y - 7)

= (9 y + 7) (9 y - 7)

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Frequently Asked Questions (FAQ)

What is factor 81y^2-49 ?
The solution to factor 81y^2-49 is (9y+7)(9y-7)