document.write( "Question 825996: The product of two consecutive numbers is 72. Use a quadratic equation to find the two sets of numbers.
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document.write( "So, (x - 8)(x-9) = 0
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document.write( "x^2 + -17 + 72 = 0
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document.write( "ax^2 + bx + c, where a = 1, b = -17 and c = 72.
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document.write( "\"Plug\" into x = b+-sqrt4ac/2a\r
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document.write( "I found online that:
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document.write( "-17 + sqrt(1)
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document.write( "-17 + 1 = -16/2 = -8
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document.write( "-17 - 1 = -18/2 = -9 \r
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document.write( "Aren't you meant to plug in all the numbers in the equation? Why am I getting decimal numbers?
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Algebra.Com's Answer #497755 by phoihe001(34)![]() ![]() You can put this solution on YOUR website! 8 and 9 \n" ); document.write( " |