Question

Правильно решил? Если нет, то где ошибка? 2 * x^2 * (-5) * x -88 D = 25 - 4*2*(-88) = 729 = 27^2 x1 = 2 x2 =-13

Answer 1

Х1=(5+27)/4=32/4=8
х2=(5-27)/4=-22/4=-5,5

Answer 2

To verify if the solutions are correct, we need to solve the given equation step by step.

The equation provided is: 2x^2 * (-5) * x - 88 = 25

Step 1: Simplify the equation -10x^3 - 88 = 25

Step 2: Move the constant term to the other side of the equation -10x^3 = 25 + 88 -10x^3 = 113

Step 3: Divide by -10 to isolate x^3 x^3 = 113 / (-10) x^3 = -11.3

Step 4: Take the cube root of both sides to find the value of x x = (-11.3)^(1/3) x ≈ -2.241

So, the value of x is approximately -2.241, which is not one of the solutions you provided. Let's check the solutions you provided:

x1 = 2: If we plug in x = 2 into the original equation, we get: 2 * (2)^2 * (-5) * 2 - 88 = 2 * 4 * (-5) * 2 - 88 = -80 - 88 = -168 ≠ 25

x2 = -13: If we plug in x = -13 into the original equation, we get: 2 * (-13)^2 * (-5) * (-13) - 88 = 2 * 169 * (-5) * (-13) - 88 = -1690 - 88 = -1778 ≠ 25

So, neither x = 2 nor x = -13 are correct solutions to the equation. The correct solution is x ≈ -2.241, as we calculated earlier.