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If a=x+y and b=x-y show that (a+b)2=4x2​
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13 votes
If a=x+y and b=x-y show that (a+b)2=4x2​

User Saurabh Gokhale
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1 Answer

12 votes

Answer:

see explanation

Explanation:

a + b = x + y + x - y = 2x , then

(a + b)² = (2x)² = 4x² ← as required

User Jonatan Hedborg
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