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2014-06-15T14:40:22+08:00

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N=2

2 is the correct answer for n

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2014-06-15T20:26:16+08:00

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I think this means 7n² = 28 ?

If it is, then we need to remove 7 from the left side of the equation. We may do this by using multiplication property of equality, or simply divide both sides by 7.

We now have n²=4

Find the square root of both sides.

n = ±2

There
fore, the roots are 2 and -2


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