Question

Розв'яжіть рівняння х² + 3x = 0

Answer 1

Х в квадраті + 3х=0
х(х+3)=0
х=0 або х+3=0
х=-3
відповідь: х=0;х=-3

Answer 2

I can help you solve quadratic equations and other math problems. To solve the equation x² + 3x = 0, we can use the following steps:

- Factor the left-hand side of the equation by taking out the common factor of x. This gives us x (x + 3) = 0. - Set each factor equal to zero and solve for x. This gives us x = 0 or x = -3. - Check the solutions by plugging them back into the original equation. This confirms that both solutions are valid.

Therefore, the equation x² + 3x = 0 has two solutions: x = 0 and x = -3. You can also use online calculators to solve quadratic equations, such as [Mathway](https://www.mathway.com/algebra) or [Онлайн калькулятор](https://ua.onlinemschool.com/math/assistance/equation/quadratic/). If you want to learn more about the formula for finding the roots of a quadratic equation, you can check out [this page](https://vseosvita.ua/test/samostiina-robota-formula-koreniv-kvadratnoho-rivniannia-748593.html). I hope this helps.