Q1 of 168 Page 7

Write the discriminate of each of the following quadratic equation:
3x² + 5x + 6 = 0

d = b² – 4ac

d = (5)² – 4 (3) (6)

d = 25 – 72

d = –47

Write the discriminate of each of the following quadratic equation:

4x² + 5x + 7 = 0

Write the discriminate of each of the following quadratic equation:

2x² + 4x + 5 = 0

Write the discriminate of each of the following quadratic equation:

√3 x² — 2√2 – 2√3 = 0

Examine whether the following quadratic equations have real roots or not:

7x² + 8x — 1 = 0

Write the discriminate of each of the following quadratic equation:3x2 + 5x + 6 = 0