" If "x in A" and "A in B," then "x in B

If x in A " and " A cancelsub B, " then " x in B . Is this statement true ?

If x in A " and " A cancelsub B, " then " x in B . Is this statement true ?

If x in A " and " A cancelsub B, " then " x in B . Is this statement true ?

If x in A " and " A cancelsub B, " then " x in B . Is this statement true ?

If =|-x a bb-x a a b-x| , then a factor is a+b+x x^2-(a-b)+x+a^2+b^2+a b x^2-(a+b)+x+a^2+b^2-a b a+b-x

If =|-x a bb-x a a b-x| , then a factor is a+b+x x^2-(a-b)+x+a^2+b^2+a b x^2-(a+b)+x+a^2+b^2-a b a+b-x

If x, y in R and |{:((a ^(x) + a ^(-x) ) ^(2) , (a ^(x) - a ^(-x) ) ^(2), 1),((b ^(x) + b ^(-x)) ^(2),(b ^(x) - b ^(-x) ) ^(2) , 1), ( ( c ^(x) + c ^(-x)) ^(2) , (c ^(x) - c ^(-x)) ^(2) , 1):}|=2 y + 6 then y = ____________.

Write 3\ x\ a\ x\ a\ x\ 2\ x\ b\ x\ b\ x\ b\ x\ c\ x\ c\ x\ c\ x\ c in the exponential form.