Solve the quadratic equation for x. What is one of the roots? 5×2 − 45 = 0

Question

Solve the quadratic equation for x. What is one of the roots? 5×2 − 45 = 0

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3 months 2022-02-02T12:31:00+00:00 1 Answer 0 views 0

x = ± 3

Step-by-step explanation:

Given

5x² – 45 = 0 ( divide through by 5 )

x² – 9 = 0 ( add 9 to both sides )

x² = 9 ( take the square root of both sides )

x = ± $$\sqrt{9}$$ = ± 3

Thus the roots are x = – 3, x = 3