Question

What is 2n square plus 3n negative 9

Answer 1

2n plus 3n is 5n. But to add the exponents you minus 2 by 9, which equals negative 7. So the answer should be 5n negative 7.

Answer 2

2n + 3n = 5n
The 2 and 3 combine to get 5 and N just remains the same