-2/5 = -4
x- $\sqrt{\}$(5x-1) = 5
(2+1/x)^2
ucln(a,b)=1 if ac chia hết cho b thì c chia hết cho b
5x+3x-26*2
what is the factor?
4 (x-2)+2 x+5=14
0.875÷1000
9 6/6 solution
4.3+2.7+1.6+0.9+2.7+1.8
Perimeter = 6 + 2 + √10 + √18 = 8 + √10 + √18 units
