# Pre-Calculus

posted by
**Jessica**
.

How do you factor this completly

7x*(4x-5)^3+(4x-5)^4

I am confused by the different power of exponets and the 7x in front Can you please help me?

7x*(4x-5)^3+(4x-5)^4 factor out the common term:

(4x-5)^3 * (7x+4x-5) Then simplify the second term.

what general equation will model this problem, with a focus of 1.8, points at (1.8,5) and (1.8,-5).with the center in the orgin.