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Popular >

factor x^4+18x^2+81

Solution

factor

x^{4} + 18 x^{2} + 81

Solution

(x^{2} + 9)^{2}

Solution steps

x^{4} + 18 x^{2} + 81

Let

u = x^{2}

= u^{2} + 18 u + 81

Factor

u^{2} + 18 u + 81 : (u + 9)^{2}

= (u + 9)^{2}

Substitute back

u = x^{2}

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

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Frequently Asked Questions (FAQ)

What is factor x^4+18x^2+81 ?
The solution to factor x^4+18x^2+81 is (x^2+9)^2