We need to factor the expression using the greatest common(GCF) factor.
The GCF is the largest factor that all numbers share.
Now, we need to find the GCF between 18x-9
Let us divide both numbers:
18/9 9/9
2 1
2/2
1
Hence, the GCF between 18x-9 is 9.
Then, we can simplify the expression as:
because 9*2x=18x and 9*-10=9.
Hence, the correct answer i