\sqrt{ } \sqrt{ } x\sqrt{x}x
Show that if A and B are sets with A ⊆ B, then
a) A ∪ B = B.
b) A ∩ B = A.
aba_{b}ab π\piπ
8.3+2.21+0.578+0.0231
□\sqrt{\Box}□
23+m(11-7m)-11m
factorise x^(4 )+4x^(3) +6x^(2)+4x+1-y^(4)
factorise x^(4 )+4x^(3) +6x^(2)+4x+1-y^(3)