Answer
$(r+3)(3r-5)$
Work Step by Step
The factor $(r+3)$ is common to both terms.
Factor out $r+3$ to obtain:
$=(r+3)[(5r-6)-(2r-1)]
\\=(r+3)[5r-6-2r-(-1)]
\\=(r+3)(5r-6-2r+1)
\\=(r+3)(3r-5)$
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