Posted by **Randy** on Saturday, May 8, 2010 at 11:23pm.

Given that lim x->c f(x)=6 and that lim x->c g(x)= -4, evaluate the following limit. Assume that c is a constant. The x in front of the f is confusing me.

lim [xf(x) + 3 g(x)]^2

x->c

- pre-cal -
**John**, Sunday, May 9, 2010 at 1:22am
The x in front of the f is any constant you would put in the equation.

Example: x->5 5=c

lim [xf(x) + 3 g(x)]^2

x->5

so, [5*6 + 5*(-4)]^2

You should be able to do the rest.

- pre-cal -
**drwls**, Sunday, May 9, 2010 at 1:23am
[c*6 + 3*(-4)]^2 = (6c -12)^2

= 36c^2 - 144c + 144

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