Question

(3х+1)в квадрате -9х (х-2)=25

Answer 1

(3х+1)^2-9х(х-2)=25
9х^2+6х+1-9х^2+18х=25
Так как 9х^2 и (-9х^2) взаимно сокращаются и получается:
6х+1+18х=25
24х=25-1
24х=24
х=1
Ответ:1
:))))))

Answer 2

Решение:

${9}^{2} + 6x + 1 - 9x {}^{2} + 18x = 25 \\ 24x + 1 = 25 \\ 24x = 25 - 1 \\ 24x = 24 \\ x = 1$

Answer 3

To solve the equation (3x + 1)² - 9x(x - 2) = 25, we can follow these steps:

Step 1: Expand the equation: (3x + 1)² - 9x(x - 2) = 25 (3x + 1)(3x + 1) - 9x(x - 2) = 25 (9x² + 6x + 1) - (9x² - 18x) = 25 9x² + 6x + 1 - 9x² + 18x = 25 Combine like terms: 24x + 1 = 25

Step 2: Simplify the equation: 24x + 1 = 25 Subtract 1 from both sides: 24x = 25 - 1 24x = 24

Step 3: Solve for x: Divide both sides by 24: x = 24 / 24 x = 1

Therefore, the solution to the equation (3x + 1)² - 9x(x - 2) = 25 is x = 1.