humnarahim627:
thnxx for your answer ...
a⁴ ok then it is equal to a×a×a×a ok
then it is a²
is square root of a⁴
ok correct thnx
then also it have no need to add anything in it too
ok....
now any problem
ok
no
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Answer:
A²-b² is answer. ........
a³-b³ = (a-b)³ = (a-b)(a-b)(a-b). ok now on putting this in question.......
=(a-b)(a-b)(a-b)/a-b. ok now
=(a-b)(a-b). [ (a-b) is cancelled by a-b ]
=(a-b)²
=a²-b² ok now
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