Q. 23.5( 19 Votes )

# Which of the following equations is quadratic?(1) x2 + 2x + 11 = 0(2) x2 – 2x + 5 = x2(3) (x + 2)2 = 2x2

1. is a quadractic equation because it is the form of and it has degree 2.

2.

it is not a quadratic equation because it is not in the form of and it doesn’t have degree 2.

3.

is a quadractic equation because it is the form of and it has degree 2.

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