danny9935 danny9935
  • 18-02-2019
  • Mathematics
contestada

What are the solutions to 2x^2+7x=4? Select all that apply

A.1/2
B.4
C.-1/2
D.-4
E.7
F.-7

Respuesta :

hroscoe
hroscoe hroscoe
  • 18-02-2019
The answers are A and D

You would first see if u can factor the equation:
First move the 4 over and set equation =0
2x^2+7x -4 = 0; next factor:
(2x - 1)(x + 4); now set each set of parentheses equal to 0:
2x-1= 0
2x=1, so x= 1/2

x+4=0
X=-4
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