factorize 125acibe - 8bcube
SabirAli:
its cube
Answers
Answered by
2
I hope it is 125acube-8bcube......
Well the answer is 5a-2b....
Because cuberoot of 125 is 5 and a3 is a....
And cuberoot of 8 is 2 and b3 is b
I think we just have to open the formula acube-bcube
So answer is (5a-2b)(25asquare+10ab+4bsquare)
yeah u r right sorry for the wrong answer
It's ok
Answered by
3
125a³-8b³
= 5³a³-2³b³
=(5a)³ - (2b)³
=(5a-2b)[ (5a)²+(5a*2b) +(2b)²] { ∵ x³-y³ = (x-y)(x²+xy+y²)}
= (5a-2b)(25a²+10ab+4b²)
= 5³a³-2³b³
=(5a)³ - (2b)³
=(5a-2b)[ (5a)²+(5a*2b) +(2b)²] { ∵ x³-y³ = (x-y)(x²+xy+y²)}
= (5a-2b)(25a²+10ab+4b²)
Thank u selecting as brainliest
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