4. Kameron solved the problem (3 x² + 2 x+1)-(x2-3x+4) using the following
work.
(3x2+2x+1)-(x²-3x+4)
3x²+2x+1-x²-3x+4
3x²-x²+2x-3x+1+4
2x²-x+5
Review Kameron's work and determine if his answer is correct, or if incorrect,
the reason why.