Factor -7x^3+21x^2+3x-9 by grouping

Step-by-step explanation:

We can take "common" from first 2 terms and common from next 2 terms. Shown below:

That's how we do it. We can't simplify, or factor, any further.

choice b is correct

step-by-step explanation:

we have been given the following system of inequalities;

we are required to graph the solution to the system of inequalities. using a graphing tool, the graph of the system is as shown in the attachment. the continuous line represents the graph of while the dotted line represents .

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8