solve 16x^2 - 81 = 0

Answer 1

To solve the equation 16x^2 - 81 = 0, we first add 81 to both sides to get:

16x^2 = 81

Next, we divide both sides by 16 to isolate x^2:

x^2 = 81/16

To find the value of x, we take the square root of both sides:

x = ±√(81/16)

x = ±(√81) / √16

x = ±9 / 4

Therefore, the solutions to the equation 16x^2 - 81 = 0 are x = 9/4 or x = -9/4.