Question

The value of p for equation 2x2– 4x + p = 0 to have real roots will be

Answer 1

let x=1
2x2-4x+p=0
2(1)2-4(1)+p=0
4-4+p=0
p=-4+4
p=0

Answer 2

let x=1

2x2-4x+p=0

2(1)2-4(1)+p=0

2-4+p=0

p=-2+4

p=2