Question

Solve for x: (2x-7)(x+4)=0

Answer 1

2x-7=0 x+4=0
2x=7 x=-4
x=3.5 or x=-4

Answer 2

Either 2x-7=0 or x+4=0

Now point 1:
2x-7=0 which implies 2x=7 which gives x=7/2

Now point 2:
x+4=0 which gives x=-4

Answer 3

i for some reason got 7/2 -4

Answer 4

http://www.wolframalpha.com/input/?i=solve+for+x+%282x-7%29%28x%2B4%29%3D0