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Olenka [21]
3 years ago
10

PLEASE PLEASE PLEASE PLEASE PLESE HELP ME???/!?!?!?!!? I'LL GIVE BRAINLY, POINTS, MEDAL, THANKS​

Mathematics
2 answers:
yuradex [85]3 years ago
7 0
A is 5x² +7x -4.
B is 5x³ -x² -8x -7 Polynomials are always closed when its under addition or subtraction. Both part A and B are polynomials.
sineoko [7]3 years ago
3 0

The correct answer for part A is 5x² +7x -4. 5x³ -x² -8x -7 is the right answer for part B. Polynomials are always closed if under addition or subtraction. The answers of both parts A and B are polynomials. hope that helps let me know if it does

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