#### Which of the following is not a quadratic equation?

(a) (x + 2)^{2} = 2(x + 3)

(b) x^{2} + 3x = ( -1) (1 – 3x)

(c) (x + 2) (x – 1) = x^{2} – 2x – 3

(d) x^{3} – x^{2} + 2x + 1 = (x + 1)^{3}

**Solution:**

#### Which of the following equations has 2 as a root?

(a) x^{2} – 4x + 5 = 0

(b) x^{2} + 3x – 12 = 0

(c) 2x^{2} – 7x + 6 = 0

(d) 3x^{2} – 6x – 2 = 0

**Solution:**

**More Solutions:**

- Which of the following is a quadratic equation.
- If 1/2 is a root of the equation.
- The roots of the equation x2 – 3x – 10 = 0.
- If the equation 2x² – 5x + (k + 3) = 0 has equal roots
- If the equation 3x² – kx + 2k =0 roots.
- If the equation 2x² – 6x + p = 0 has real.
- Which of the following equations has no real roots.