Answer:
9x^2-3x+4
Step-by-step explanation:
(3x^2+2x^2-5x+7)+(4x^2+2x-3)
5x^2-5x+7+4x^2+2x-3
5x^2+4x^2-5x+2x+7-3
9x^2-3x+7-3
9x^2-3x+4
Answer:
26x + 4
Step-by-step explanation:
((3x3)x + (2x2)x - 5x + 7) + ((4x4)x + 2x - 3
9x + 4x - 5x + 7 + 18x - 3
13x + 18x - 5x + 7 - 3
31x - 5x + 4
26x + 4
