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The sum of two consecutive numbers is 61. What are the numbers? |
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Answer» Step-by-step explanation: We are given that the SUM of the squares of two consecutive NUMBERS is EQUAL to 61. Let the numbers be x and x+1. So x^2 + (x+1)^2 = 61 => x^2 + x^2 + 1 + 2x = 61 => 2x^2 + 2x - 60 = 0 => x^2 + x - 30 =0 => x^2 + 6x - 5x - 30 =0 => x(x+6) -5(x+6) =0 =>(x-5)*(x+6) =0 We can have x = 5 and x = -6 Therefore the numbers can be 5 and 6 or -6 and -5. The required result is (5, 6) and (-6,-5). |
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