factorise: 729x^3 +1
Answers
Answered by
1
Answer:
(9x +1) (18 square - 9x+1
Answered by
1
Answer:
( 9x + 1 )( 81x² - 9x + 1 )
Step-by-step explanation:
729x³ + 1
It can be written as
= ( 9x )³ + 1³
Using algebraic identity a³ + b³ = ( a + b)( a² - ab + b² )
= ( 9x + 1 ){ ( 9x )² - 9x( 1 ) + 1² }
= ( 9x + 1 )( 81x² - 9x + 1 )
Hence factorised.
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