Question

2x2+3x-5Срочно роррроо​

Answer 1

2х2+3х-5=4х+3х-5=7х-5

Answer 2

-11

вот я загуглил если не правильно я не виноват

Answer 3

Solving the Equation 2x^2 + 3x - 5:

To solve the equation 2x^2 + 3x - 5, 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.

Applying the Quadratic Formula:

For the equation 2x^2 + 3x - 5, we have: a = 2, b = 3, and c = -5.

Plugging these values into the quadratic formula, we get: x = (-3 ± √(3^2 - 4*2*(-5))) / (2*2)

Calculating the Discriminant:

The discriminant, which is the expression inside the square root, is given by b^2 - 4ac. Let's calculate it: b^2 - 4ac = 3^2 - 4*2*(-5) = 9 + 40 = 49

So, the discriminant is 49.

Finding the Solutions:

Now, we can find the solutions for x using the quadratic formula: x = (-3 + √49) / 4 and x = (-3 - √49) / 4

Solving further: x = (-3 + 7) / 4 = 4 / 4 = 1 x = (-3 - 7) / 4 = -10 / 4 = -2.5

Conclusion:

Therefore, the solutions to the equation 2x^2 + 3x - 5 are x = 1 and x = -2.5.