by Quadratic formula ,
, values of x are
. None of mentioned options are correct according to question!
<u>Step-by-step explanation:</u>
Here we have , expression x2 + 20 = 2x or ,
.
We know that Quadratic formula is :
![x = \frac{-b \pm \sqrt{b^{2}-4ac}}{2a}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B-b%20%5Cpm%20%5Csqrt%7Bb%5E%7B2%7D-4ac%7D%7D%7B2a%7D)
![x^2 + 20 = 2x](https://tex.z-dn.net/?f=x%5E2%20%2B%2020%20%3D%202x)
⇒ ![x^2-2x+20=0](https://tex.z-dn.net/?f=x%5E2-2x%2B20%3D0)
![a=1\\b=-2\\c=20](https://tex.z-dn.net/?f=a%3D1%5C%5Cb%3D-2%5C%5Cc%3D20)
Putting this value in equation
:
⇒ ![x = \frac{-b \pm \sqrt{b^{2}-4ac}}{2a}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B-b%20%5Cpm%20%5Csqrt%7Bb%5E%7B2%7D-4ac%7D%7D%7B2a%7D)
⇒ ![x = \frac{-(-2) \pm \sqrt{(-2)^{2}-4(1)(20)}}{2(1)}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B-%28-2%29%20%5Cpm%20%5Csqrt%7B%28-2%29%5E%7B2%7D-4%281%29%2820%29%7D%7D%7B2%281%29%7D)
⇒ ![x = \frac{2 \pm \sqrt{4-80}}{2}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B2%20%5Cpm%20%5Csqrt%7B4-80%7D%7D%7B2%7D)
⇒ ![x = (\frac{2 \pm 2i\sqrt{19}}{2})](https://tex.z-dn.net/?f=x%20%3D%20%28%5Cfrac%7B2%20%5Cpm%202i%5Csqrt%7B19%7D%7D%7B2%7D%29)
⇒ ![x = 1 \pm (1)i\sqrt{19}}](https://tex.z-dn.net/?f=x%20%3D%201%20%5Cpm%20%281%29i%5Csqrt%7B19%7D%7D)
Therefore , by Quadratic formula ,
, values of x are
. None of mentioned options are correct according to question!
4x + x - 15 + 3 -8x = 13
Combine like terms:
(4x+x-8x) + (-15+3) =13
-3x-12 = 13
+12 +12
———————-
-3x = 25
— —-
-3 -3
X= -25/3
The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs.
will she would have rode 4 3/5 miles in all.
2 3/10+2 3/10=4 3/5
that is 2 3/10 there and 2 3/10 back so you would add that together.
MILES IN ALL 4 3/5
Hope this helps