Answer:
(a+b)
2
=(a+b)(a+b)
=(a+b)(a)+(a+b)(b)
=a
+ab+ab+b
+2ab+b
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Answer:
(a+b)
2
=(a+b)(a+b)
=(a+b)(a)+(a+b)(b)
=a
2
+ab+ab+b
2
=a
2
+2ab+b
2