How do you simplify $5x(3x+1)+7(3x+1)$ ?

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Answer 1 · 2017-02-09T13:14:01

See the entire simplification process below:

First, expand the terms within the parenthesis:

$(5x xx 3x) + (5x + 1) + (7 xx 3x) + (7 xx 1) ->$

$15x^2 + 5x + 21x + 7$

Now, combine like terms:

$15x^2 + (5 + 21)x + 7$

$15x^2 + 26x + 7$

How do you simplify 5x(3x+1)+7(3x+1) 5x(3x+1)+7(3x+1) ?