Answer:
x^2+15x+7
Step-by-step explanation:
There are no like terms.
40
3, 6, 9...
120 = 3+(n-1)3
120 = 3+3n-3
120 = 3n
120 / 3 = 3n / 3
40 = n
bet
Here are the 3 answers you needed :)!!!
Your answer is x={-1, 11/3}
