1) x*x-(-2)*2x=32
x²+4x-32=0
D= 16+128=144
x1= (-4+12)/2= 4
x2= (-4-12)/2= -8
2) 1/3*9-(x-1)*1= 3-x+1= 4-x
1) x*x-(-2)*2x=32
x²+4x-32=0
D= 16+128=144
x1= (-4+12)/2= 4
x2= (-4-12)/2= -8
2) 1/3*9-(x-1)*1= 3-x+1= 4-x