Heyyy I was woundering if anyone's knows any grade 11 pre-cal cause my friends here and extremely use less thanks
Kat

Yup.

I just did a test and I don't really understand why did so bad , its quadratics and stuff with them.thanks kat

SOLVE EACH SYSTEM OF EQUATION

x+y=5
3x+z=2
4y-z=8


2x+3y+3z=2
10x-6y+3z=0
4x-3y-6z=2


4x+4y-2z=3
-6x-6y+6z=5
2x-3y-4z=2


2x+4y-2z=9
4x-6y+2z=-9
x-y+3z=-4


CAN U HELP ME UNDERSTAND THEM... I Don't GET IT;)