SOLUTION: a girl is 6years older than her brother.the product of their ages is 185 find their ages

Question 756704: a girl is 6years older than her brother.the product of their ages is 185 find their ages
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
a girl is 6years older than her brother.the product of their ages is 185 find their ages
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x*(x+6) = 185

Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc)

Quadratic equation (in our case ) has the following solutons:

For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=776 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 10.9283882771841, -16.9283882771841. Here's your graph:

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He's 10.928
She's 16.928

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