Question

Which statement is true when you solve for x ?

x2=9121

(1 point)

You would use the inverse operation of dividing both sides by 2; there would be one solution for x; x=960.5

You would use the inverse operation of square root; there would be one solution for x; x=311

You would use the inverse operation of square root; there would be two solutions for x; x=311 and x = −311

You would use the inverse operation of dividing both sides by 2; there would be one solution for x; x=4.5121
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Answer 1

The correct choice is the one saying use the square root and get two solutions. For x^2 = 9121 you take square roots:

x = ±√9121 ≈ ±95.5039.

(So the idea in option 3 is correct about the method and two solutions, though 311 is not the correct numeric value.)