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Mathematics 8 Online
OpenStudy (anonymous):

Factor 3x^4-12x^2

OpenStudy (mertsj):

What do those two terms have in common?

OpenStudy (abb0t):

\[3x^2(x^2-4)=3x^2(x+a)(x-a)\]

OpenStudy (anonymous):

3x^2

OpenStudy (mertsj):

So you need to factor out 3x^2

OpenStudy (anonymous):

I did

OpenStudy (mertsj):

What is the other factor?

OpenStudy (anonymous):

x^4-4

OpenStudy (mertsj):

|dw:1359238787009:dw|

OpenStudy (anonymous):

Yup thats what i got

OpenStudy (mertsj):

If you multiply that, using the distributive property, do you get 3x^4-12x^2?

OpenStudy (anonymous):

Nope

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