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Popular >

factor x^4-x^2-72

Solution

factor

x^{4} - x^{2} - 72

Solution

(x^{2} + 8) (x + 3) (x - 3)

Solution steps

x^{4} - x^{2} - 72

Let

u = x^{2}

= u^{2} - u - 72

Factor

u^{2} - u - 72 : (u + 8) (u - 9)

= (u + 8) (u - 9)

Substitute back

u = x^{2}

= (x^{2} + 8) (x^{2} - 9)

Factor

x^{2} - 9 : (x + 3) (x - 3)

= (x^{2} + 8) (x + 3) (x - 3)

Popular Examples

factor 2m^2+3m-27 factor

2 m^{2} + 3 m - 27

factor 3x^3+2x^2-8x factor

3 x^{3} + 2 x^{2} - 8 x

10 - 3 a = 7 a - 2

simplify 4/(2sqrt(5))simplify

\frac{4}{2 5}

(3 x + 4)^{2} = 25

Frequently Asked Questions (FAQ)

What is factor x^4-x^2-72 ?
The solution to factor x^4-x^2-72 is (x^2+8)(x+3)(x-3)