SOLUTION: Hello, I am having a hard time trying to solve this system of eqaution. I hope you can help me. X² - y = -2 X - y = 2 Thank you Fabiana

Algebra.Com
Question 181505: Hello,
I am having a hard time trying to solve this system of eqaution. I hope you can help me.
X² - y = -2
X - y = 2
Thank you
Fabiana
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
I am having a hard time trying to solve this system of eqaution. I hope you can help me.
X² - y = -2
X - y = 2
-----------
x - y = 2 --> y = x-2
Sub into the 1st eqn


Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc)
Quadratic equation (in our case ) has the following solutons:



For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

The discriminant -15 is less than zero. That means that there are no solutions among real numbers.

If you are a student of advanced school algebra and are aware about imaginary numbers, read on.


In the field of imaginary numbers, the square root of -15 is + or - .

The solution is , or
Here's your graph:

--------------
Then solve for y, y = x-2


RELATED QUESTIONS

I am having a very hard time trying to figure this out. Can you please help me? Find... (answered by Fombitz)
Hello; I am in a college beginning algebra class and I am struggling with solving... (answered by friesr,MathTherapy)
I am having a hard time doing this can someone help me Use the substitution method... (answered by solver91311)
Hello, I am trying to figure out how to solve a system by the method of substitution. I... (answered by KMST)
I am having a very hard time remembering how to solve this type of system 1/40 +... (answered by bucky)
Can you please help me with these two problems. Graph each equation: y=-3x+2. I am having (answered by rapaljer)
HELP!! I am getting stumped. Trying to solve by substitution but am having a hard time. (answered by josgarithmetic)
I AM A PARENT TRYING TO HELP MY DAUGHTER DO THIS PROBLEMS I NEVER HAD THIS MAYBE YOU... (answered by venugopalramana,fractalier)
Hello, I am having a really hard time understanding this question. Can someone please... (answered by lwsshak3)