Q18 of 168 Page 7

Solve the following equations by the method of completion of a square.
15x² + 53x + 42 = 0

Divide by 15

Add the coefficient of to both sides

Solve the following equations by the method of completion of a square.

5x² – 24x – 5 = 0

Solve the following equations by the method of completion of a square.

7x² – 13x – 2 = 0

Solve the following equations by the method of completion of a square.

7x² + 2x – 5 = 0

Write the discriminate of each of the following quadratic equation:

x² + 4x + 3 =0

Solve the following equations by the method of completion of a square.15x2 + 53x + 42 = 0