Take a photo of it and then put the photo in Photo math
Answer:
-17x³-10x²+x+9
Step-by-step explanation:
(5x³+4x²+6x-3)+(-2x³+3x²-7x+9)-(5x+3)(4x²+x-1)
(5x³+4x²+6x-3)+(-2x³+3x²-7x+9)-(20x³+5x²-5x+12x²+3x-3)
(3x³+7x²-x+6)-(20x³+17x²-2x-3)
-17x³-10x²+x+9
Answer B
the first curve stops on (1 ; 3) excluded (x < 1)
and
the straight line starts on (1 ; 1) included (x ≥ 1)
U add all the number together and then divide of how many numbers there is