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| Math Central | Quandaries & Queries |
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Question from peyton, a student: 18x=6(x*x) |
Hi Peyton.
Move everything to one side of the equation, leaving a zero on the other side:
0 = 6x2 - 18x
Then factor it:
0 = 6x(x-3)
If two things times each other makes zero, then one or the other (or both) equal zero. So either 6x = 0 or x - 3 = 0. Solve these separately:
6x = 0
x = 0/6
x = 0.x - 3 = 0
x = 3.So x = 0 or x = 3.
Cheers,
Stephen La Rocque.
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