Answer:
A. ±4
Explanation:
-x² +16 = 0
x² - 16 = 0
x² = 16
x = ±√16
x = ±4
Answer: A ; ±4
The correct option is
(A) ±4
Step-by-step explanation: We are given to solve the following quadratic equation using the method of square roots :
In square root method, we should take x² term on one side and the constant the on other side of the equation Then, we should take the square roots.
From equation (i), we have
Thus, the required solution of the given equation is x = ±4.
Option (A) is CORRECT.