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Popular >

factor x^4-x^2-56

Solution

factor

x^{4} - x^{2} - 56

Solution

(x^{2} + 7) (x^{2} - 8)

Solution steps

x^{4} - x^{2} - 56

Let

u = x^{2}

= u^{2} - u - 56

Factor

u^{2} - u - 56 : (u + 7) (u - 8)

= (u + 7) (u - 8)

Substitute back

u = x^{2}

= (x^{2} + 7) (x^{2} - 8)

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\frac{1}{3} (2 x - 1) = 1

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- 5 x + 7 > 42

Frequently Asked Questions (FAQ)

What is factor x^4-x^2-56 ?
The solution to factor x^4-x^2-56 is (x^2+7)(x^2-8)