Q. 75.0( 1 Vote )

If a + b = 5 and a – b = 4, find a2 + b2 and ab.

Answer :

Given: a + b = 5 and a + b = 5


Using (a– b)2 = a2 + b2 – 2a×b and (a+ b)2 = a2 + b2 + 2a×b






Similarly,





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