Question

1.2х в квадрате - 0.3 =0 Помогите пожалуйста решить (подробно)

Answer 1

1,2х²-0,3=0
1,2х²=0,3
х²=0,3:1,2
х²=0,25
х=√0,25
х=0,5  и х=-0,5

Answer 2

Solving the Equation 1.2x^2 - 0.3 = 0

To solve the equation 1.2x^2 - 0.3 = 0, we can use the quadratic formula, which states that for an equation in the form ax^2 + bx + c = 0, the solutions for x are given by:

x = (-b ± √(b^2 - 4ac)) / (2a)

Applying the Quadratic Formula

For the equation 1.2x^2 - 0.3 = 0, we can identify the values of a, b, and c as follows: - a = 1.2 - b = 0 - c = -0.3

Now, we can substitute these values into the quadratic formula to find the solutions for x.

Calculating the Solutions

Using the quadratic formula, the solutions for x are given by: x = (-0 ± √((0)^2 - 4*1.2*(-0.3))) / (2*1.2)

Solving the discriminant first: Discriminant = b^2 - 4ac Discriminant = (0)^2 - 4*1.2*(-0.3) Discriminant = 0 - (-1.44) Discriminant = 1.44

Now, we can find the solutions for x: x = (-0 + √1.44) / 2*1.2 x = (0 + 1.2) / 2.4 x = 1.2 / 2.4 x = 0.5

and

x = (-0 - √1.44) / 2*1.2 x = (0 - 1.2) / 2.4 x = -1.2 / 2.4 x = -0.5

Conclusion

Therefore, the solutions to the equation 1.2x^2 - 0.3 = 0 are x = 0.5 and x = -0.5.