Question

Р^2+р-90=0 Плиз поскорее!!!

Answer 1

Д=1+360=361
р1=- 1-19:2= -20:2 = -10
р2= -1+19:2= 18:2 = 9
Ответ:-10 и 9

Answer 2

р^2+р-90=0
D=1+4*90=1+360=361
p12=(-1+-19)/2=-10 9
ответ -10 9

Answer 3

Quadratic Equation Solution

The given equation is a quadratic equation in the form of ax^2 + bx + c = 0. To solve for x, we can use the quadratic formula:

x = (-b ± √(b^2 - 4ac)) / (2a)

where a = 1, b = 1, and c = -90.

Substitute these values into the quadratic formula to find the solutions for x.

Calculation

Using the quadratic formula: x = (-1 ± √(1^2 - 4*1*(-90))) / (2*1)

Simplify the expression under the square root: x = (-1 ± √(1 + 360)) / 2 x = (-1 ± √361) / 2 x = (-1 ± 19) / 2

So, the solutions for x are: x = (-1 + 19) / 2 = 18 / 2 = 9 x = (-1 - 19) / 2 = -20 / 2 = -10

Therefore, the solutions for the given quadratic equation R^2 + R - 90 = 0 are R = 9 and R = -10.