SOLUTION: a positive 3 is less than a another. When 6 times the larger is added to the square of the smaller, the result is 27. Find the numbers.

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Question 1061871: a positive 3 is less than a another. When 6 times the larger is added to the square of the smaller, the result is 27.
Find the numbers.

Answer by ikleyn(52884) About Me  (Show Source):
You can put this solution on YOUR website!
.
a positive highlight%28cross%283_is%29%29 is 3 less than a another. When 6 times the larger is added to the square of the smaller, the result is 27.
Find the numbers.
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Let "x" be the smaller positive number.

Then the larger number is (x+3).

The condition says

6%28x%2B3%29+%2B+x%5E2 = 27.

Simplify:

x%5E2+%2B+6x+-+9 = 0.

Solve the quadratic equation:

x%5B1%2C2%5D = %28-6+%2B-+sqrt%2836+-+4%2A%28-9%29%29%29%2F2 = %28-6+%2B-+sqrt%2872%29%29%2F2 = -3+%2B-+3%2Asqrt%282%29.

The positive root is x = -3 + 3*sqrt(2).


Answer.  The smaller number is -3+%2B+3%2Asqrt%282%29.  The larger number is 3%2Asqrt%282%29.