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The square of a number is less than its 27 times by 180 . Which of the following can be the number ? a) 12 b) 16 c) 17 d) 18 |
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Answer» Answer: Number is 12 Step-by-step explanation: 27x - x^2 =180 x^2 - 27x + 180 = 0 x^2 - 12x - 15X + 180 = 0 x(x-12) -15(x-12) = 0 (x-12)(x-15) = 0 x = 12 & 15 |
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