Question

The expression 3x^2-33x-180 can be factored into the form a(x+b)(x+c) where a, b, and c are constants, to reveal the zeros of the function defined by the expression. What are the zeros of the function defined by 3x^2-33x-130? Select all that apply
a)-15
b)-10
c)-6
d)-4
e)4
f)6
g)10
h)15

Answer 1

3x²-33x-180=3(x²-11x-60)=3(x-15)(x+4)
the roots are when x-15=0, x=15 and when x+4=0, x=-4
d and h are the answers.