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Physics Chemistry

Entry Test MCQ :: Equations and Inequalities

  If the numerical values of (a-b)2 and (a+b)2 are equal then which of the following must be true?
[A]. a + b = 0[B]. a - b = 0
[C]. ab = 0[D]. a = 1 / b
[E]. a = -b    

Answer: Option C
Junaid said:    
 
Because they are equal optn d
Junaid said:    
 
Answer is 4ab=1
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