200-5(10+{60-50})
(2x+5)(6x-5)
find the differention coefficiennt of: $tan^{-1}${(1+x)/(1-x)}
2y-5x=25
4x+5y=3
sonia applied a force of 42n on an area of 6m square how much preassure does she apply
2*5
what is the ratio 12:16 fully simplified
x/5+1/2=3x/10
rational equation
Simplify: (2y2 + 4y5xy) + (8xy + 2y2 +3y)