Posted by Luke on Wednesday, October 19, 2011 at 7:06am.
Ummmmmmmm. How is that easy??????????
It's only easy if you know the quadratic formula:
x = [12 ± √(144-132)]/6
= (12 ± √12)/6
= 2 ± √3/3
= 1.423 or 2.577
Answer in the book is 6±√3/3
I was able to get to (12 ± √12)/6 but I couldn't figure out how you got the rest.
4x+y=12
6x+8y=8
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