The roots of equation ax2 + bx + c = 0, a ≠ 0 are real, if b2 – 4ac is
A. = 0
B. ≥ 0
C. ≤ 0
D. none of these
Answer:B
The roots of equation ax2 + bx + c = 0, a ≠ 0 are real, if b2 – 4ac is
A. = 0 B. ≥ 0 C. ≤ 0 D. none of these