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Popular >

factor x^4-x^2-90

Solution

factor

x^{4} - x^{2} - 90

Solution

(x^{2} + 9) (x^{2} - 10)

Solution steps

x^{4} - x^{2} - 90

Let

u = x^{2}

= u^{2} - u - 90

Factor

u^{2} - u - 90 : (u + 9) (u - 10)

= (u + 9) (u - 10)

Substitute back

u = x^{2}

= (x^{2} + 9) (x^{2} - 10)

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Frequently Asked Questions (FAQ)

What is factor x^4-x^2-90 ?
The solution to factor x^4-x^2-90 is (x^2+9)(x^2-10)