Question

Solve the equation

2x²+ 8x - 1 = 0
by completing the square.
Give your answers correct to 2 decimal places.

Answer 1

x = 0.08

Explanation:

2x²+ 8x - 1 = 0

4x + 8x - 1 = 0

12x - 1 = 0

Add 1 to the -1 and to the 0 too

12x = 1

Divide both side

x = 0.08