Answer
$5x$, $3$, like
Work Step by Step
To multiply $(5x+3)(x^{2}+8x+7)$, begin by multiplying each term of $x^{2}+8x+7$ by $5x$. Then multiply each term of $x^{2}+8x+7$ by $3$. Then combine like terms.
This concept is further explained on page 54.
