25^x-5^(x+1)+4=0
sinhx/x limitx 0
Lx+5 if -5<x<-2
Let A = \{1, 2\} and B = \{3, 4\} Write AB How many subsets will AB have? List them.
480 / 0.6
what is the ratio for 2:1 for 27 pupils
x=2 x−1x_{-1}x−1
what is the lowest common multiple of 2,3,4 and 9
x + 2y = 7
2x - 2y + -10
2x - y = 26
y - 10 = -x
