Question 321332
I need help with the following word problem:
The sum of a positive number and its square is 210. find the number.

thank you!


Let number be N


Then we'll have: {{{N + N^2 = 210}}}


{{{N^2 + N - 210 = 0}}}


(N + 15)(N - 14) = 0 ------ Factoring equation


N + 15 = 0, or N - 14 = 0


N = - 15 or N = 14. 


Since it's stated that the number is positive, then we'll have N, or number = {{{highlight_green(14)}}}


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