Question

Use the equation to answer the following question. 3x^(2)+7x-20=0

What are the solutions of the equation?
A. x=-(5)/(3) and x=4
B. x=-(4)/(3) and x=5
C. x=(4)/(3) and x=-5
D. x=(5)/(3) and x=-4
I just need help please

Answer 1

D. x=(5)/(3) and x=-4

Explanation:

mulitply 3 and -20 =

-60

which 2 factors of -60, that when added make +7?

+12 and -5 do this

3(x+12/3)(x-5/3) = 0

3(x+4)(x-5/3)=0

divide both sides by 3

(x+4)(x-5/3)=0

x= -4 and x=5/3