factories (a-b)²+4(a-b)
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Answer:
hello
Step-by-step explanation:
(a−b)
2
+4ab
=a
2
−2ab+b
2
+4ab ....[∵(a−b)
2
=a
2
−2ab+b
2
]
=a
2
+2ab+b
2
....[∵(a+b)
2
=a
2
+2ab+b
2
]
=(a+b)
2
=(a+b)(a+b)
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