# How do you multiply polynomials (-5x)(2x²-3)-4x ?

Oct 21, 2015

Multiply the $- 5 x$ into $2 {x}^{2}$ and $- 3$
First we multiply $- 5 x$ into the $\left(2 {x}^{2} - 3\right)$ by distributing the terms. (Use B.E.D.M.A.S )
$\left(- 5 x \cdot 2 {x}^{2}\right) + \left(- 5 x \cdot - 3\right) - 4 x$
$\left(- 10 {x}^{3}\right) + \left(15 x\right) - 4 x$
$- 10 {x}^{3} + 11 x$