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Popular >

factor a^4-81

Solution

factor

a^{4} - 81

Solution

(a^{2} + 9) (a + 3) (a - 3)

Solution steps

a^{4} - 81

Apply exponent rules

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

Apply Difference of Two Squares Formula:

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

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

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

Factor

a^{2} - 9 : (a + 3) (a - 3)

= (a^{2} + 9) (a + 3) (a - 3)

Popular Examples

\frac{2}{( 3 + 4 ) ^{3}}

simplify-1/3+1 simplify

- \frac{1}{3} + 1

64 n - 6 \geq 36 n - 16

simplify \sqrt[6]{27}simplify

simplify 2/4+1 simplify

\frac{2}{4} + 1

Frequently Asked Questions (FAQ)

What is factor a^4-81 ?
The solution to factor a^4-81 is (a^2+9)(a+3)(a-3)