SOLUTION: A positive number is 30 less than its square. Find the number.

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Question 136499This question is from textbook algebra 1 structure and method
: A positive number is 30 less than its square. Find the number. This question is from textbook algebra 1 structure and method

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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A positive number is 30 less than its square. Find the number.
:
x = x^2 - 30
or
x^2 - x - 30 = 0
Factors to
(x-6)(x+5) = 0
:
x = +6 is the positive number