Question

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

Answer 1

Answer:

1

Step-by-step explanation:

After simplification of the equation compare it to the general form

ax^2 +bx +c =0

The highest degree of equation should be 2.