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The product of a number and 2 more than that is 168, what are the numbers? |
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Answer» Let the number be x x(x+2) = 168 x2 + 2x = I68 x2 + 2x + 1 = I68 + 1 (x+1)2 = 169 x + 1 = ± 13 x + 1 = 13 x + 1= – 13 x = 13 – 1 = 12 x = -13 – 1 = – 14 The number is 12 and 14 or – 12 and – 14 |
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