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Sum of all the lines. A triangular pyramid has 6 lines so add all those together. Interesting question >.>, I never took the perimeter of a three dimensional object or even heard of it so I may be wrong..
m^2 - m - 12 is simply (x-4)(x+3) x^2 + 6x + 27 is a weird one if you only just started learning how to factor. Not to mention the factors contain imaginary numbers. You can solve it in two ways. The first way I forgot -.-. The second is to use the
Oh that was silly >.>.. I can't apply the power rule since it doesn't have a constant exponent. So is the only way to differentiate this equation is to use the natural logarithm and then the power + chain rule?

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