Question

Решите уравнение -18x^2+72=0

Answer 1

-18х²=-72
х²=4
х=+-2
вот так решаем.

Answer 2

$x ^{2} - 4 = 0 \\ x {}^{2} = 4 \\ x1 = 2 \\ x2 = - 2$

Answer 3

To solve the equation -18x^2 + 72 = 0, follow these steps:

Step 1: Bring all terms to one side of the equation to set it equal to zero: -18x^2 + 72 = 0

Step 2: Divide the entire equation by the common factor, which is 18, to simplify it: x^2 - 4 = 0

Step 3: Now, we can use the square root property to find the solutions for x:

x^2 = 4

Step 4: Take the square root of both sides of the equation:

x = ±√4

Step 5: Calculate the square roots:

x = ±2

So, the solutions to the equation are x = 2 and x = -2.