Question

36x в квадрате - 81 = 0

Answer 1

36x^2=81
Берем корень из обоих частей и получаем
6х=9 или 6х=-9
х=1.5 или х=-1.5

Answer 2

To solve the equation 36x^2 - 81 = 0, we can use the quadratic formula, which is given by:

x = (-b ± √(b^2 - 4ac)) / 2a

In this case, the equation is in the form of ax^2 + bx + c = 0, where: a = 36 b = 0 (since there's no x-term) c = -81

Now, we can plug these values into the quadratic formula:

x = (0 ± √(0^2 - 4 * 36 * -81)) / 2 * 36

Simplifying further:

x = ±√(0 - (-11664)) / 72

x = ±√(11664) / 72

x = ±108 / 72

Now, we get two solutions for x:

1. x = 108 / 72 Reduce the fraction: x = 3 / 2

2. x = -108 / 72 Reduce the fraction: x = -3 / 2

So, the solutions to the equation 36x^2 - 81 = 0 are x = 3/2 and x = -3/2.