Question

Solve the following quadratic equation by completing the square :2xsquare +x+4=0​

Answer 1

Answer:

2x^2+x+4=0

x^2+x/2+2=0

x^2+2.x.1/4+(1/4)^2-(1/4)^2+2

(x+1/4)^2+2-1/16

(x+1/4)^2+31/16

You can not solve this equation, it should have been -31/16

So it should have been 2x^2+x-4