If a - b = 3 and a2 - b2 = 25, then find the sum of both the variables 'a' and 'b'

Thanks for your questions. Your problem was - If a – b = 3 and a2 – b2 = 25, then find the sum of both the variables ‘a’ and ‘b’ Correct answer: d Let's we see how? I'm trying to solve your problem and explain in details.  now let's see - Your question's details Explanation: We know the standard algebraic formula for (a)2 – (b)2 (a)2 – (b)2 = (a + b) (a – b) Now, according to the data given in the question, a - b = 3 and a2 - b2 = 25. Substituting these values in above equation, we get, 25 = (a + b) (3) ∴ (a + b) = 25/3 ∴ a + b = 8.3333 Hence, the correct answer is option d. Hope you can understand easily. If this is useful for you, then share to your friends on facebook, twitter and google plus. and visit from my website http://KnowledgeWorldbd.com Thanks.