Question

10x^2-3x-0,4=0 решите уравнение

Answer 1

Дискриминант=3^2-4*10*-0.4=25
х1=3+5/2*10=0.4
х2=3-5/2*10=-0.1

Answer 2

To solve the quadratic equation 10x^2 - 3x - 0.4 = 0, we can use the quadratic formula, which is given by:

x = (-b ± √(b^2 - 4ac)) / 2a

where a, b, and c are the coefficients of the quadratic equation ax^2 + bx + c = 0.

For the given equation, a = 10, b = -3, and c = -0.4. Now, plug these values into the quadratic formula and solve for x:

x = (3 ± √((-3)^2 - 4 * 10 * (-0.4))) / 2 * 10 x = (3 ± √(9 + 16)) / 20 x = (3 ± √25) / 20 x = (3 ± 5) / 20

Now we have two possible solutions:

1. x = (3 + 5) / 20 x = 8 / 20 x = 0.4

2. x = (3 - 5) / 20 x = -2 / 20 x = -0.1

So, the solutions to the equation are x = 0.4 and x = -0.1.