Решите уравнение 2х2+5=7 если уравнение имеет более одного корня ,в ответ запишите сумму всех его корней

2x^2 + 5 = 7

To solve this equation, we need to move 5 to the other side by subtracting it from both sides:

2x^2 = 7 - 5 2x^2 = 2

Then, divide both sides by 2:

x^2 = 1

To find the roots, we take the square root of both sides:

x = ± √1

The equation has two roots, which are x = 1 and x = -1.

The sum of all the roots is 1 + (-1) = 0.

So, sum of all roots is 0.