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Popular >

factor+b^2-81

Solution

factor

+ b^{2} - 81

Solution

(b + 9) (b - 9)

Solution steps

b^{2} - 81

Rewrite

81

as

9^{2}

= b^{2} - 9^{2}

Apply Difference of Two Squares Formula:

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

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

= (b + 9) (b - 9)

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Frequently Asked Questions (FAQ)

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