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$(2 + 3x) * (4 + 5x) = 2(4 + 5x) + 3x(4 + 5x)$

I don't get it. What do I do?

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    What are you trying to do? Are you asking if what you wrote is correct (it is, as others have already ex$p$lained), or how to $p$roceed further?2011-09-25

1 Answers 1

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The equation you have uses the law of distribution: $a(b+c)= ab + ac$ If you set $a=4+5x$, $b=2$ and $c=3x$, you get the equation in your question.