Question

X2-3x + 15- X = 15-x +18​

Answer 1

Ответ:

x*2-3x-x=-x+18

x*2-3x=18

2x-3x=18

-x=18

x=-18

Объеснение:

*(умножить)

-(минус)

Answer 2

Приветик !

Приступим

X 2 - 3 x + 15 - x = 15 - x + 18

Зачеркиваем 15 -х и получаем:

X 2 - 3 x=18

5 x =18

х=18:5

х=3,6

Удачи тебе ✨

Учись работать сама

Answer 3

Let's simplify the given equation step by step:

x^2 - 3x + 15 - x = 15 - x + 18

First, combine like terms on both sides of the equation:

x^2 - 4x + 15 = 33

Now, subtract 33 from both sides of the equation to isolate the quadratic term:

x^2 - 4x + 15 - 33 = 0

x^2 - 4x - 18 = 0

Now, the equation is in the form of a quadratic equation. You can solve it using the quadratic formula:

x = (-b ± √(b^2 - 4ac)) / (2a)

In this case, a = 1, b = -4, and c = -18. Plug these values into the quadratic formula:

x = (4 ± √((-4)^2 - 4 * 1 * (-18))) / (2 * 1)

x = (4 ± √(16 + 72)) / 2

x = (4 ± √88) / 2

x = (4 ± 2√22) / 2

Now, simplify further by factoring out a common factor of 2 in the numerator:

x = (2(2 ± √22)) / 2

The 2 in the numerator and denominator can cancel out:

x = 2 ± √22

So, the solutions for the equation are:

x = 2 + √22 x = 2 - √22