Question

what is 3(5x^2-9x) evaluated for x=-4

Answer 1

\(\bf 3(5{\color{brown}{ x}}^2-9{\color{brown}{ x}}) \qquad {\color{brown}{ x }}=4\implies 3(5{\color{brown}{ (4)}}^2-9{\color{brown}{ (4)}})=?\)

Answer 2

\(\Huge x = \color{red}{-4}\)

Answer 3

hmmm welcome to os @jdoe0001 x'D & @m2128

Answer 4

thanks I just need help on a test lol

Answer 5

\(3(5x^2-9x) =\)

\(=3[5(-4)^2-9(-4)]\)

Answer 6

oh I get it now thank you

Answer 7

Now just use the order of operations to finish.

Answer 8

okay