How do you multiply $(5x + 7)(5x + 6)$ ?

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Answer 1 · 2017-04-04T03:48:42

$25x^2+65x+42$

Use the FOIL technique (first, outside, inside, last)

So by that idea, you would just multiply these pairs:

$5x*5x=25x^2$
$5x*6=30x$
$7*5x=35x$
$7*6=42$

Collect like terms and the answer will be:

= $25x^2+65x+42$

How do you multiply (5x + 7)(5x + 6)(5x + 7)(5x + 6)?