1. Factorise : (1) y' - 27
hey guys anwer it plz
Answers
Answered by
5
Step-by-step explanation:
1−27a
3
=1
3
−(3a)
3
, Using the formula, a
3
−b
3
=(a−b)(a
2
+ab+b
2
)
=(1−3a)[1
2
+1×3a+(3a)
2
]
=(1−3a)(1+3a+9a
2
)
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