SOLUTION: If the square of a positive number is increased by seven times the number, the result is eight. Find the number.
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Question 856280: If the square of a positive number is increased by seven times the number, the result is eight. Find the number.
Answer by tommyt3rd(5050) (Show Source): You can put this solution on YOUR website!
1^2 + 7*1 =8
...so 1 will work.
In general:
x^2+7x=8 leads to
x^2+7x-8=0
which factors to:
(x-1)(x+8)=0
but -8 is not positive
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