Solve the quadratic equation : x2 + 3x - 9 = 0 for x.
Solve the quadratic equation : x2 + 3x - 9 = 0 for x.
Solution:
x = −b ± √(b2 − 4ac)/2a
x = -3 ± √[(32 − 4.1(-9)]/2.1
x = -3 ± √(45)/2