Factorise using suitable identity:
i) x²+ 2xy + y² – 100
Kindly tell with explanation
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Factorise using suitable identity:
i) x²+ 2xy + y² – 100
Kindly tell with explanation
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Answer:
6xy-100=94
so the answer is 94xy
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Verified answer
i) x²+2xy+y²-100
={(x)²+2×x×y+(y)²} - 100 {x²+2xy+y² is the expanded form of (x+y)²
=(x+y)²-(10)²
Now using the identity a²-b² = (a+b)(a-b)
In this case we will take (x+y) as a and 10 as b
(x+y)²-(10)²
= (x+y+10)(x+y-10) (Ans)
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