Answer:
-3/4.......
Step-by-step explanation:
down 3 right 4
The solutions to the quadratic equations are:
a) ![x = \frac{3 \pm \sqrt{19}}{5}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B3%20%5Cpm%20%5Csqrt%7B19%7D%7D%7B5%7D)
b) x = -8, x = 5.
A quadratic function is given according to the following rule:
![y = ax^2 + bx + c](https://tex.z-dn.net/?f=y%20%3D%20ax%5E2%20%2B%20bx%20%2B%20c)
The solutions are:
![x_1 = \frac{-b + \sqrt{\Delta}}{2a}](https://tex.z-dn.net/?f=x_1%20%3D%20%5Cfrac%7B-b%20%2B%20%5Csqrt%7B%5CDelta%7D%7D%7B2a%7D)
![x_2 = \frac{-b - \sqrt{\Delta}}{2a}](https://tex.z-dn.net/?f=x_2%20%3D%20%5Cfrac%7B-b%20-%20%5Csqrt%7B%5CDelta%7D%7D%7B2a%7D)
In which:
![\Delta = b^2 - 4ac](https://tex.z-dn.net/?f=%5CDelta%20%3D%20b%5E2%20-%204ac)
Item a:
The coefficients are a = 5, b = -6, c = -2, hence:
Item b:
The equation is:
x² + 3x = 40
x² + 3x - 40 = 0.
It can be simplified as follows:
(x - 5)(x + 8) = 0.
Hence the solutions are:
More can be learned about quadratic equations at brainly.com/question/24737967
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Answer:
The length of a rectangle is (2x + 4) and the width is (3x - 2) with a perimeter of 104cm.
Write and solve an equation to determine the length and width of the rectangle. Explain how you
determine your answer.
Answer:
How many hours per week do you play football?
Step-by-step explanation:
Answer:
something
Step-by-step explanation: