How do you multiply $2(x+2) (x+5)$ ?

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Answer 1 · 2015-08-17T16:06:03

Use FOIL for the last two, and then multiply everything by $2$

First:
$x*x=x^2$
Outer:
$x*5=5x$
Inner:
$2*x=2x$
Last:
$2*5=10$

Add up:
$x^2+5x+2x+10=x^2+7x+10$

Multiply by $2$
Answer $=2x^2+14x+20$

How do you multiply 2(x+2) (x+5)2(x+2) (x+5)?