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2 votes
2 votes
6 times a number is 16 less than the square of that number. Find the positive solution.

User Hally
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1 Answer

13 votes
13 votes

Answer:

x=8

Explanation:

Let's say this mystery number is x.

6 times this x is 16 less than the square of x so we can write this as:


6x = x^2 - 16

We can then re-arrange this into a quadratic and simplify it so:


x^2 -6x-16 =0


(x-8)(x+2)

x=8, x=-2

And since the question is asking for the positive solution,
x=8

User Amrrs
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