Answer:
15) 3x^2-3x+2
17) 4x^3+3x^2-4x
19) 3x^3-2x^2-8x+3
Step-by-step explanation:
15) (4x^2-x-3) - (x^2+2x-5)
4x^2 -x-3 -x^2 -2x +5 Multiply the right side by -1, then remove ()
4x^2 -x^2 -x-2x +5-3 Combine like terms
3x^2-3x+2 Final Answer
17) (7x^3 +3x^2 +4x +10) - (10 +8x+ 3x^3)
7x^3 +3x^2 +4x +10 - 10 -8x -3x^3 Multiply right side by -1, remove ()
7x^3 -3x^3 +3x^2 -8x +4x +10 -10 Combine like terms
4x^3 +3x^2 -4x Final Answer
19) (8x^3 +3x^2 -8x +10) - (7 +5x^2 +5x^3)
8x^3 +3x^2 -8x +10 -7 -5x^2 -5x^3 Multiply right side by -1, remove ()
8x^3 -5x^3 -5x^2 +3x^2 -8x +10 -7 Combine like terms
3x^3 -2x^2 -8x +3 Final Answer
