What are the solutions to the quadratic equation 4x2 + 28x = 0? x = 4 and x = −7 x = 4 and x = 7 x = 0 and x = −7 x = 0 and x = 7

asked Aug 8, 2018 192k views

5 votes

What are the solutions to the quadratic equation 4x2 + 28x = 0?

x = 4 and x = −7
x = 4 and x = 7
x = 0 and x = −7
x = 0 and x = 7

7.5k points

Please log in or register to add a comment.

3 votes

4x^2+28x=0 factor out greatest common factor, 4x in this case

4x(x+7)=0

4x=0, x=0

x+7=0, x=-7

So x=0 and x=-7

Drewm answered Aug 9, 2018

by Drewm

8.5k points

4 votes

x = 0 and x = -7 is your answer
Hope I helped < 3