Question

X^2 + x - 72= 0 ХЭЛПП МИИИ

Answer 1

Ответ:

х1=8

х2=(-9)

держите надеюсь всё правильно и понятно

Answer 2

Ответ 8; -9

Объяснение:

Answer 3

To solve the quadratic equation $x^2 + x - 72 = 0$, we can use the quadratic formula:

$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

In this equation, $a$, $b$, and $c$ are the coefficients of the quadratic equation. For our equation $x^2 + x - 72 = 0$, we have $a = 1$, $b = 1$, and $c = -72$. Plugging these values into the quadratic formula, we get:

$x = \frac{-1 \pm \sqrt{1^2 - 4 \cdot 1 \cdot (-72)}}{2 \cdot 1}$

Simplifying further:

$x = \frac{-1 \pm \sqrt{1 + 288}}{2}$

$x = \frac{-1 \pm \sqrt{289}}{2}$

$x = \frac{-1 \pm 17}{2}$

This gives us two possible solutions:

$x_1 = \frac{-1 + 17}{2} = 8$

$x_2 = \frac{-1 - 17}{2} = -9$

Therefore, the solutions to the equation $x^2 + x - 72 = 0$ are $x = 8$ and $x = -9$.