Question

Use any method to solve the equation. If necessary, round to the nearest hundredth. 9x^2-21=0

Answer 1

Answer:

x = 1.53, -1.53.

Step-by-step explanation:

9x^2 - 21 = 0

9x^2 = 21

x^2 = 21/9

x =  +/- √21 / 3

x = 1.53, -1.53.