Question

multiply.
$(-4b-7)(5b+3)$
simplify your answer.

Explanation:

Step1: Apply FOIL method

$(-4b)(5b) + (-4b)(3) + (-7)(5b) + (-7)(3)$

Step2: Calculate each term

$-20b^2 -12b -35b -21$

Step3: Combine like terms

$-20b^2 + (-12b-35b) -21 = -20b^2 -47b -21$

Answer:

$-20b^2 -47b -21$