Question

The polynomial equation x(x + 1) + 8 = (x + 2) (x – 2) is:

Options

• linear equation

• quadratic equation

• cubic equation

• bi-quadratic equation

Answer 1

linear equation

Explanation:

We have x(x + 1) + 8 = (x + 2) (x – 2)

⇒ x² + x + 8 = x² – 4

⇒ x² + x + 8 – x² + 4 = 0

⇒ x + 12 = 0

Which is a linear equation.