2x+5y=-10
A man is 2 times his sons age now. Four years ago the ratio of father to son was 4:1. What will be the ratio of their ages two yea...
\left(4x-3\right)\left(x+5\right)<0
n-8=-10
x( $\frac{x+40}{20}$)
Product Mix Problem
The manager in a manufacturing firm is considering devoting the excess capacity to one or
more of products: ...
43,67/4,3=
a.x + b.y = e
c.x + d.y = f
a.d - b.c = 2
e.d - f.b = 1
a.f - e.c = -1
Find\:the\:\:11\:\:term\:of\:binomial\:expansion\:\:\left(x+y\right)^{17}
\frac{2un}{1+un}-un
