Question
Find the following products:
$ \left(x^2-3 x+7\right) \times(2 x+3) $
$ \left(x^2-3 x+7\right) \times(2 x+3) $
✓
Answer
$ \left(x^2-3 x+7\right) \times(2 x+3) $
$ =2 x\left(x^2-3 x+7\right)+3\left(x^2-3 x+7\right) $
$ =2 x^3-6 x^2+14 x+3 x^2-9 x+21 $
$ =2 x^3-3 x^2+5 x+21 $
$ =2 x\left(x^2-3 x+7\right)+3\left(x^2-3 x+7\right) $
$ =2 x^3-6 x^2+14 x+3 x^2-9 x+21 $
$ =2 x^3-3 x^2+5 x+21 $
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