Question

-x приx =-2 решить уравнение

Answer 1

Это очень логично, что будет ответ 2
Подставляя вместо минус х минус, то минус на минус даст плюс и будет просто 2

Answer 2

To solve the equation -x * x = -2, we need to find the value(s) of x that satisfy the equation. We can do this by rearranging the equation and applying the quadratic formula. The equation can be rewritten as:

x^2 = 2

Now, using the quadratic formula, which is given by:

x = (-b ± √(b^2 - 4ac)) / 2a

where the equation is in the form ax^2 + bx + c = 0, in our case: a = 1, b = 0, and c = -2.

Substituting these values into the formula:

x = (±√(0^2 - 4 * 1 * -2)) / 2 * 1

x = (±√(0 + 8)) / 2

x = (±√8) / 2

Now, we can simplify further:

x = ±√8 / 2

Since √8 can be simplified as √(4 * 2) = √4 * √2 = 2√2, we get:

x = ± (2√2) / 2

Now, cancel out the common factor of 2 in the numerator and denominator:

x = ± √2

So, the solutions to the equation are x = √2 and x = -√2.