To solve the system of equations below, Pedro isolated the variable y in the first equation and then substituted it into the second equation. What was the resulting equation?
A. x2 + 4x2 = 36
B. x2 + 4x = 36
C. x2 + 2x = 36
D. x2 + 2x2 = 36

Question

To solve the system of equations below, Pedro isolated the variable y in the first equation and then substituted it into the second equation. What was the resulting equation?
                A.	x2 + 4x2 = 36
 		B.	x2 + 4x = 36
 		C.	x2 + 2x = 36
 		D.	x2 + 2x2 = 36

wolf1728 · Answer

Is that question typed correctly?
It just seems worded strange to me.

zab505 · Answer

Yeah, that's how they word them

wolf1728 · Answer

Just wondering if that is EXACTLY how it is worded - did you copy and paste it EXACTLY? 
I'm wondering because if nothing else, I think equation A should have that term reading 4x² and not 4x2 - wow I am seriously overly picky nerdy, etc. LOL

zab505 · Answer

HAha

wolf1728 · Answer

Heck - I was just wondering because sometimes it's the teeniest bit of information that can make the difference between  finding an answer and spending 3 hours on a problem and getting nowhere.  (a small helpful hint from the  Nerd of the Day) LOL

wolf1728 · Answer

And another thing that has me suspicious is that when solving for 2 unknowns, it is rare that you will encounter equations with an x² in them.  They usually are linear equations 
x + 2y = 5 that sort of thing
very rarely that you solve for simultaneous equations like
2x² + 5y² , etc

zab505 · Answer

Thank you very much!