SOLUTION: Need help here, please with systems of linear equations in 3 variables! I don't understand it at all. It's very confusing to me. 3x^2+4y+z=7 2y+z=3 -5x+3y+8z=-31 TIA!

Question 171266: Need help here, please with systems of linear equations in 3 variables!
I don't understand it at all. It's very confusing to me.
3x^2+4y+z=7
2y+z=3
-5x+3y+8z=-31
TIA!
Andrew
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Need help here, please with systems of linear equations in 3 variables!
I don't understand it at all. It's very confusing to me.
3x^2+4y+z=7
2y+z=3
-5x+3y+8z=-31
------------
You say linear, but the 1st eqn is 2nd order. Is that a typo?
PS I thought I just posted this.
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