Question

2x²+x-4 . Solve by completing the square methood

Answer 1

Answer:

x=1

Step-by-step explanation:

2x²+x=4

Dividing by 2 we get

x²+x/2=2

x²+x/2+1/4=2+1/4

(x+1/2)²=9/4

1. x+1/2=3/2. 2. x+1/2=-3/2

x=3/2-1/2. x=-3/2-1/2

x=3-1/2. x=-3-1/2

x=2/2 x=-4/2

x=1. x=-2