Factor R² + 3RA + 2A²

Factor Completely, I don't understand how to do problems like this. Please explain
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1 Answer

R2+3RA+2A2,

R2+RA+2RA+2A2, (open out the middle term, trying to duplicate the coefficients of R2 and A2)

R(R+A)+2A(R+A), (factorise by noticing common factors).

R+A becomes a new common factor so it can be isolated and distributed:

(R+2A)(R+A) is the final factorisation.

by Top Rated User (1.2m points)

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