2. [2^(n+1)]^2*2^[(-2n-1)]/4^n
3. Simplify [2^(n+4)-2(2^n)]/[2(2^(n+3)]
4. The H.C.F and L.C.M of three expressions are xyz^2 and x^3y^5z^4 respectively.If 2 of the expressions are x^2y^3z^3 and x^3yz^2,find the third expression.
5. The L.C.M of x,2x^2,3x^3,4x^4 and 5x^5 is...
更新1:
hey pingshek,you type something wrong ,right? O_O
更新2:
;)haha
更新3:
well...i will really want to cry if yoy continue to blame me for no reasons From :-D changing to :’(
更新4:
you!!!