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Mathematics 18 Online
OpenStudy (anonymous):

80s4 – 45 factor completely

OpenStudy (mertsj):

First factor out the common factor of 5

OpenStudy (anonymous):

5(16x^2)+5(-9)

OpenStudy (anonymous):

does that look right?

OpenStudy (mertsj):

This would look better: 5(16s^4-9)

OpenStudy (mertsj):

Now it is the difference of two squares.

OpenStudy (mertsj):

\[5(16x^4-9)=5(4x^2-3)(4x^2+3)\]

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