Question

Уравнение 9x2+15=11

Answer 1

Ответ: 9*х²=11-15=-4 - нет решения, любое число  в квадрате не может быть отрицательным.

Объяснение:

Answer 2

To solve the equation 9x^2 + 15 = 11, we need to isolate the variable x on one side of the equation. Here's the step-by-step solution:

1. Subtract 15 from both sides to move the constant term to the right side of the equation: 9x^2 + 15 - 15 = 11 - 15

   Simplify: 9x^2 = -4

2. Now, we want to isolate x^2, so divide both sides by 9: (9x^2)/9 = (-4)/9

   Simplify: x^2 = -4/9

3. Finally, take the square root of both sides to solve for x: x = ±√(-4/9)

Since the square root of a negative number is not a real number, this equation has no real solutions. However, it does have complex solutions. The answer is:

x = ±(2i/3), where "i" represents the imaginary unit (√(-1)).

So, the two complex solutions to the equation are x = 2i/3 and x = -2i/3.