solve the equation giving the roots in form of re^iteta;
z^5=i
2x² - 8x + 6 = 0
solve x
X-(X*20/100)=1399
X-(X*20/100)=ROUND1399
Y-(Y*25/100)=ROUND1349
X=Y
5x² - 20x + 15 = 0
Y-(Y*25/100)=1349
3x-y=-6-2z
2x+y-4z=15
4x+2y=16+z
