1) Why is it helpful to remove the GCF before factoring using
grouping or substitution?

2) A right rectangular prism has a volume of 6x3 − 3x2 − 45x.
a. What are expressions for the length, width, and height?

b. What is the least possible integer value of x for the rectangular
solid to exist? Explain.

b). 4320 have a nice day

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)