Question

Factorise the given expression and find the LCM.
a²+5ab+4b² and a²+11ab+28b²​

Answer 1

Step-by-step explanation:

We know (a

2

−b

2

)=(a+b)(a−b) and (a

2

−2ab+b

2

)=(a−b)(a−b)

∴ LCM of (a

2

−b

2

),(a−b) and (a

2

−2ab+b

2

)

=(a−b)(a+b)(a−b)

=(a

2

−b

2

)(a−b)

Hope it helps...

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