Posted by **jonathan** on Sunday, November 26, 2006 at 5:44pm.

Suppose that four times the square of a number equals 20 times that number. Whatis the number?

It'll take you 45 seconds if you just plug in a few numbers

Again -- putting the subject in the subject line helps.

=)

4 n^2 = 20n

zero is one solution. Solve for n.

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