Solve the quadratic equation : x2 + 3x - 9 = 0 for x.

by Doubtly (98.9k points) in Maths asked Jun 29, 2022 340 views

edited Jun 29, 2023

Solve the quadratic equation : x2 + 3x - 9 = 0 for x.

1 Answer

by Doubtly (98.9k points) answered Jun 29, 2022

by Doubtly selected Jun 29, 2023

Solution:

x = −b ± √(b² − 4ac)/2a

x = -3 ± √[(3² − 4.1(-9)]/2.1

x = -3 ± √(45)/2

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