Math, asked by sourabh258, 1 year ago

Factorise 27 y cube + 125 z cube​

Answers

Answered by abhinav9918
1
27Y3+125z3
(3Y)^3+(5z)^3
now use a^3+b^3
if you dont know identity search on google.
Answered by Urvashigaur02
5
{\bf{\green{Hola!!}}}

27y³+125z³

using the identity:-

a³+b³=(a+b)(a²+b²-ab)

(9y)³+(5z)³=

(9y+5z)[(9y)²+(5z)²-(9y×5z)]

(9y+5z)[81y²+25z²-45yz]

9y(81y²+25z²-45yz)+5z(81y²+25z²-45yz)

729y³+ 225yz²- 405zy²+ 405zy² + 225z³- 225yz²

{\bf{\red{Answer=729y^3+225z^3}}}


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