9514 1404 393
Answer:
x = ±√(c/a)
Explanation:
Undo what is done to x.
ax² -c = 0
ax² = c . . . . . . add c
x² = c/a . . . . . . divide by a
x = ±√(c/a) . . . . take the square root
4.6m questions
5.9m answers