Help needed :/ This one is a little different...
Find the solutions of the following quadratic equation by completing the square:
x^2-x=20*
The solutions are:
a. -5 or -4
b. -5 or 4
c. 5 or 4
d. 5 or -4

Question

Help needed :/ This one is a little different...
Find the solutions of the following quadratic equation by completing the square:
x^2-x=20*
The solutions are:
a. -5 or -4
b. -5 or 4
c. 5 or 4
d. 5 or -4

anonymous · Answer

$$\Large x^2-x=20^* \quad ???  \quad \text{what does * mean??}$$

anonymous · Answer

*= closed circle= multiply

anonymous · Answer

$$x ^{2}-5x+4x-20 = 0$$
x(x-5) +4(x-5)=0
(x+4)(x-5=0
x=-4,x=5

anonymous · Answer

does it mean  20 to the power 0 ??   like $$\LARGE 20^0$$

anonymous · Answer

dont burden him, he hates math, :)

anonymous · Answer

@myko where does that equation came from ??

anonymous · Answer

LOL I think myko got it :) Thanks for trying Kreshnik.

anonymous · Answer

from my keyboard

anonymous · Answer

Haha :D

anonymous · Answer

@myko  I know it came from your keyboard but if there's  $$20^0$$  then it's equal to 1 !& @mathsux4real ...   I was just trying to know exactly what the given are :( , I wouldn't bother my self asking you if I didn't know the answer would I ?? :)

anonymous · Answer

that's just a typing mistake. He had been asking questions about quadratic equations all day long...

anonymous · Answer

but did you read what we write?   "*= closed circle= multiply" @myko

anonymous · Answer

sry @Kreshnik for "from my keyboard" just having a bit of fun

anonymous · Answer

ok ok .. anyway , sorry for dragging the task down ,  next time I'll do better :)  O_O

anonymous · Answer

if that would be one, there is no solution

anonymous · Answer

at least in reals

anonymous · Answer

@myko Therefore I wanted to be sure, what number it is :(

anonymous · Answer

kk, sry

anonymous · Answer

SORRY FOR THE CONFUSION GUYS... :/ Thanks for helping though :)