(ax-b)(ax-b)=(5x-3)
5/x = 5 + 4 +3 +2 +1
y´´*sen(y)+(y´)^2*cos(y)=0 for x
y´´*sen(y)+(y´)^2*cos(y)=0
cos0,79
2-2
3x + 1
------ =1
10
2x + 4 = 2
simplify 6(y+4)-2(3y-5)
