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Popular >

factor x^4+6x^2-7

Solution

factor

x^{4} + 6 x^{2} - 7

Solution

(x + 1) (x - 1) (x^{2} + 7)

Solution steps

x^{4} + 6 x^{2} - 7

Let

u = x^{2}

= u^{2} + 6 u - 7

Factor

u^{2} + 6 u - 7 : (u - 1) (u + 7)

= (u - 1) (u + 7)

Substitute back

u = x^{2}

= (x^{2} - 1) (x^{2} + 7)

Factor

x^{2} - 1 : (x + 1) (x - 1)

= (x + 1) (x - 1) (x^{2} + 7)

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Frequently Asked Questions (FAQ)

What is factor x^4+6x^2-7 ?
The solution to factor x^4+6x^2-7 is (x+1)(x-1)(x^2+7)