Question

Решите уравнение х^2-3х-18=0 СРОЧНО, РЕБЯТ

Answer 1

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Вот, держи     :)

Answer 2

Solving the Quadratic Equation

To solve the quadratic equation x^2 - 3x - 18 = 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)

In this case, the coefficients are: - a = 1 - b = -3 - c = -18

Applying the Quadratic Formula

Let's apply the quadratic formula to find the solutions for x:

x = (-(-3) ± √((-3)^2 - 4*1*(-18))) / (2*1)

x = (3 ± √(9 + 72)) / 2

x = (3 ± √81) / 2

Calculating the Solutions

Now, let's calculate the solutions:

x1 = (3 + √81) / 2

x1 = (3 + 9) / 2

x1 = 12 / 2

x1 = 6

x2 = (3 - √81) / 2

x2 = (3 - 9) / 2

x2 = -6 / 2

x2 = -3

Conclusion

Therefore, the solutions to the equation x^2 - 3x - 18 = 0 are: - x1 = 6 - x2 = -3

I hope this helps! If you have any more questions or need further assistance, feel free to ask.