4.2y-0.6y+3.8
if a=root a/2+1
prove that a^6-1/a^6=+-(65root17)/64
3x+2y=8
-x+y=-11
y=8x+1
y=6x+3
y=-3x+ 11
y=-6x -13
5x+4y=-14
y=-7x-15
(1,-5) and (-3,3) in standard form
x=11
-4x+y=-23
x^2-9xy+20y^2
x+3/4x+12
