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Answer:
2x²-10x+4
Step-by-step explanation:
sum- (2x²-8x+11)+(x²-3x-9)
= 3x²-11x+3
difference - (3x²-11x+3)-(x²-x-1)
=3x²-11x+3-x²+x+1
=2x²-10x+4
Answered by
1
Step-by-step explanation:
sum of 2x2-8x+11
+ x2-3x-9
= 3x2+11x+2
- x2- x-1
= 2x2+10x+1
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