Question

14+x=2 2x+x-16=28-17x=255-x=20+2xx+21=3-5x17x-3+x=12-2x+52(x-12)=210-7x(5x-1)2-2x-3=35-3(2x+4)погите напишите все ответы пж​

Answer 1

14+x=2

x+14-2 = 0

x+12 = 0

x = -12

-

2x+x-16=2

3x-16-2 = 0

3x-18 = 0

x = 18/3

x = 6

-

8-17x=25

-17x+8-25 = 0

-17x-17 = 0

x = -17/17

x = -1

-

5-x=20+2x

5-x-20-2x = 0

-3x-15 = 0

x = -15/3

x = -5

-

x+21=3-5x

x+21-3+5x = 0

6x+18 = 0

x = -18/6

x = -3

-

17x-3+x=12-2x+5

17x-3+x-12+2x-5 = 0

20x-20 = 0

x = 20/20

x = 1

-

2(x-12)=210-7x

2x-24-210+7x = 0

9x-234 = 0

x = 234/9

x = 26

-

(5x-1)^2-2x-3=35-3(2x+4)

25x^2-10x+1-2x-3-35+6x-12 = 0

25x^2-6x-49 = 0

D = b^2-4ac => 36-4*25*(-49) = 36+4900 = 4936 > 0, 2 корня.

$x = \frac{-b+-\sqrt{D} }{2a}$

$x_1 = \frac{6+4936}{50} = \frac{4942}{50} = 98,84$

$x_2 = \frac{6-4936}{50} = -\frac{4930}{50} = -98,6$

Answer 2

Конечно, я помогу вам решить эти уравнения. Вот решения:

1. 14 + x = 2 x = 2 - 14 x = -12

2. 2x + x - 16 = 28 3x - 16 = 28 3x = 28 + 16 3x = 44 x = 44 / 3

3. 17x = 255 x = 255 / 17 x = 15

4. -x = 20 + 2x -x - 2x = 20 -3x = 20 x = 20 / -3

5. 21 + 3x = 3 3x = 3 - 21 3x = -18 x = -18 / 3

6. -5x + 17x - 3 + x = 12 13x - 3 = 12 13x = 12 + 3 13x = 15 x = 15 / 13

7. 52(x - 12) = 210 - 7x 52x - 624 = 210 - 7x 52x + 7x = 210 + 624 59x = 834 x = 834 / 59

8. (5x - 1)2 - 2x - 3 = 35 10x - 2 - 2x - 3 = 35 8x - 5 = 35 8x = 35 + 5 8x = 40 x = 40 / 8

9. -3(2x + 4) = 35 - 3 -6x - 12 = 32 -6x = 32 + 12 -6x = 44 x = 44 / -6

Пожалуйста, обратите внимание на правильность расчетов и знаки операций.