24q7 – 42q4r + 36q3r2 – 63r3 how would you factor the expression by grouping?

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owlfred · Answer

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anonymous · Answer

I'd start by pulling all the common q's out of the first two terms and all the common r's out of the second two..

$$24q^7 – 42q^4r + 36q^3r^2 – 63r^3$$$$= 2q^4(12q^3 - 21r) + 3r^2(12q^3 - 21r)$$

anonymous · Answer

And you can probably continue from there.

anonymous · Answer

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anonymous · Answer

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