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Popular >

factor m^4-4m^2-21

Solution

factor

m^{4} - 4 m^{2} - 21

Solution

(m^{2} + 3) (m^{2} - 7)

Solution steps

m^{4} - 4 m^{2} - 21

Let

u = m^{2}

= u^{2} - 4 u - 21

Factor

u^{2} - 4 u - 21 : (u + 3) (u - 7)

= (u + 3) (u - 7)

Substitute back

u = m^{2}

= (m^{2} + 3) (m^{2} - 7)

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Frequently Asked Questions (FAQ)

What is factor m^4-4m^2-21 ?
The solution to factor m^4-4m^2-21 is (m^2+3)(m^2-7)