Use factoring to write an equivalent expression 15 x +9

Add  15 to both sides of the equation.  x = − 9 + 15

Add  − 9  and  15 . x = 6

you can do many ways one would be 3(5x times 3) (hope this helps and please give me brainliest)

Step-by-step explanation:

9 and 15  have a common factor of 3

divide 15x by 3 which is 5x

then do 9 divided by 3 which is 3

then put 3 outside parentheses and put 5x to show 15x and 3 to show the 9

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.