Question

9х(х-2)+(2-3х)(2+3х)=22

Answer 1

Ответ:

-1

Объяснение:

9х(х-2)+(2-3х)(2+3х)=22

$9x (x - 2) + (2 - 3x)(2 + 3x) = 22 \\ 9x {}^{2} - 18x + (4 + 6x - 6x - 9x {}^{2} ) = 22 \\ 9x {}^{2} -18x + 4 - 9x {}^{2} = 22 \\ - 18x + 4 = 22 \\ - 18x = 22 - 4 \\ - 18x = 18 \\ x = - 1$

Answer 2

To solve the equation 9x(x - 2) + (2 - 3x)(2 + 3x) = 22, follow these steps:

1. Expand both sides of the equation to simplify it:

   9x(x - 2) + (2 - 3x)(2 + 3x) = 22

   9x^2 - 18x + (4 - 9x^2) = 22

2. Combine like terms on the left side of the equation:

   9x^2 - 18x + 4 - 9x^2 = 22

   (9x^2 - 9x^2) - 18x + 4 = 22

   -18x + 4 = 22

3. Now, isolate the variable x by moving constants to the other side of the equation:

   -18x + 4 - 4 = 22 - 4

   -18x = 18

4. Divide both sides by -18 to solve for x:

   (-18x) / (-18) = 18 / (-18)

   x = -1

So, the solution to the equation is x = -1.