Question

2x²-3x-5=0 числа -1 и 2,5

Answer 1

Ответ:

Х1=2,5

Х2=-1

Объяснение:

Смотри решение на фото

Answer 2

To verify if the given numbers satisfy the equation 2x² - 3x - 5 = 0, we can substitute them into the equation and check if both sides of the equation are equal.

Let's start with x = -1: 2x² - 3x - 5 = 0 2(-1)² - 3(-1) - 5 = 0 2(1) + 3 - 5 = 0 2 + 3 - 5 = 0 5 - 5 = 0 0 = 0

The equation holds true for x = -1.

Now let's check x = 2.5: 2x² - 3x - 5 = 0 2(2.5)² - 3(2.5) - 5 = 0 2(6.25) - 7.5 - 5 = 0 12.5 - 7.5 - 5 = 0 5 - 5 = 0 0 = 0

The equation also holds true for x = 2.5.

Therefore, both -1 and 2.5 are solutions to the equation 2x² - 3x - 5 = 0.