How do you simplify $x^2-5x+3(x^2+7x)$ ?

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Answer 1 · 2018-04-18T14:10:43

Distribute and combine like terms.

Distribute the 3 among the terms inside parentheses:

$x^2-5x+3(x^2+7x)=x^2-5x+3x^2+21x$

Combine like terms.

$x^2-5x+3x^2+21x=4x^2+16x$

$=4x^2+16x$

Answer 2 · 2018-04-18T14:12:45

$x=0,-4$

Simplify, then factor

$x^2 - 5x + 3x^2 + 21x$
$4x^2+16x$
$x^2+4x$
$x(x+4)$
$x=0, x+4=0$
$therefore$
$x=0,-4$

How do you simplify x^2-5x+3(x^2+7x)x^2-5x+3(x^2+7x)?