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1. (9×^2-17×+31)+(2×^4+3×^2+12)+(5×^3-17×+11)+(2×^4+4×^3-7×^2-8×-26)
2. (509b-471b^3+211+54b^2)and(471b^3-509b-4b^2-11)
pls answer this thank uuu^_^
1. (9×^2-17×+31)+(2×^4+3×^2+12)+(5×^3-17×+11)+(2×^4+4×^3-7×^2-8×-26)
2. (509b-471b^3+211+54b^2)and(471b^3-509b-4b^2-11)
pls answer this thank uuu^_^
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Answer:
1. 4x4+9x3+5x2−42x+28
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