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Popular >

factor 49x^2-81

Solution

factor

49 x^{2} - 81

Solution

(7 x + 9) (7 x - 9)

Solution steps

49 x^{2} - 81

Apply exponent rules

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

Apply Difference of Two Squares Formula:

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

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

= (7 x + 9) (7 x - 9)

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((x^{- 1})^{- 1})^{- 1}

Frequently Asked Questions (FAQ)

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