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Popular >

factor x^8-21x^4-46

Solution

factor

x^{8} - 21 x^{4} - 46

Solution

(x^{4} + 2) (x^{4} - 23)

Solution steps

x^{8} - 21 x^{4} - 46

Let

u = x^{2}

= u^{4} - 21 u^{2} - 46

Factor

u^{4} - 21 u^{2} - 46 : (u^{2} + 2) (u^{2} - 23)

= (u^{2} + 2) (u^{2} - 23)

Substitute back

u = x^{2}

= (x^{4} + 2) (x^{4} - 23)

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Frequently Asked Questions (FAQ)

What is factor x^8-21x^4-46 ?
The solution to factor x^8-21x^4-46 is (x^4+2)(x^4-23)