Question

Which of the following is not a quadratic equation * 1 point x² + 3x – 5 = 0 x + 2x +2 = 0 3 + x + x² = 0 x² – 9 = 0

Answer 1

The 2nd equation

$x + 2x + 2 = 0$

is not a Quadratic Equation, but a Linear Equation with One Variable.

For being a Quadratic in nature, the equation must be in the following syntax

$a {x}^{2} + bx + c = 0$

Where a ≠ 0, c = constant

The equation may be rewritten as:

$3x + 2 = 0$

Answer 2

Answer:

Option B) is correct

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