factorise 216x^3+729y^3
Answers
Answered by
1
Step-by-step explanation:
216x³ - 729y³
= (6x)³ - (9y)³
We have,
a³ - b³ = (a - b) (a² + ab + b²)
Using this formula,
(6x)³ - (9y)³ = (6x - 9y) (36x² + 54xy +81xy)
Therefore,
(6x -9y) and (36x² +54xy +81y²) are the factors of 216x³ + 729y³
Hope it helps you
Answered by
0
Answer:
(6x+9y)[(6x)^2-6x×9y+(9y)^2]
(6x+9y)(36x^2-54xy+81y^2)
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