Solve the equation using square roots.
2x2 + 39 = 57
(1 point)
A) mc012-2.jpg
B) –3, 3
C) –9, 9
D) no real number solutions
Subtract 39 from both sides of the equation to isolate the term with the variable:
2x^2 = 18
Next, divide both sides by 2 to solve for x^2:
x^2 = 9
To solve for x, take the square root of both sides:
x = ±√9
Since √9 can be both -3 and 3, the answer is:
B) –3, 3