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If a^2 + b^2 = 41 and ab = 4, find : (i) a – b

+3 votes
in Class 9 by kratos

If a2 + b2 = 41 and ab = 4, find :

(i) a – b

(ii) a + b

1 Answer

+3 votes
by kratos
 
Best answer

(i) (a-b)2 = a2 + b2 -2ab = 41 - 2(4) = 41 - 8 = 33

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