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Popular >

factor x^4-9x^2+20

Solution

factor

x^{4} - 9 x^{2} + 20

Solution

(x + 2) (x - 2) (x^{2} - 5)

Solution steps

x^{4} - 9 x^{2} + 20

Let

u = x^{2}

= u^{2} - 9 u + 20

Factor

u^{2} - 9 u + 20 : (u - 4) (u - 5)

= (u - 4) (u - 5)

Substitute back

u = x^{2}

= (x^{2} - 4) (x^{2} - 5)

Factor

x^{2} - 4 : (x + 2) (x - 2)

= (x + 2) (x - 2) (x^{2} - 5)

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Frequently Asked Questions (FAQ)

What is factor x^4-9x^2+20 ?
The solution to factor x^4-9x^2+20 is (x+2)(x-2)(x^2-5)