D
factorise
27a3 - 125 b3 - 135a2 +225 b2
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Answers
Answered by
0
Answer:
5a)(3+5a)(3+5a)
27+125a
3
+135a+225a
2
∵x
3
+y
3
+3x
2
y+3xy
2
=(x+y)
3
⇒(3)
3
+(5a)
3
+3×3
2
×5a+3×3×(5a)
2
⇒(3+5a)
3
⇒(3+5a)(3+5a)(3+5a)
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