Prove that
a) (a-b)2 = a- 2ab + b²b)(a+b) = a +3ab+3ab
Answers
Answered by
1
(a+b)
3
=(a+b)
2
(a+b)
=(a
2
+2ab+b
2
)(a+b)
=a
3
+2a
2
b+ab
2
+a
2
b+2ab
2
+b
3
=a
3
+3a
2
b+3ab
2
+b
3
Answered by
2
Answer:
=a-2ab+b^2b(a+b)
=a-2ab+ab^2b+b^3b
=a(1-2b)+b^2b(a+b)
=.........
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