Mathematics: (7x4 + 11x3 – x2 – 8x + 6) – (-12x4 + 9x2 – 15) a) -5x4 + 11x3 + 8x2 – 8x – 9 b) 19x4 + 11x3 – 10x2 – 8x + 21 c) 5x4 + 2x3 + 14x2 – 8x + 6 d) -19x4 – 2x3 – 8x2 – x + 9 e) -19x4 – 2x3 – 8x2 – x – 9

(7x4 + 11x3 – x2 – 8x + 6) – (-12x4 + 9x2 – 15) - id7411328612492151373739, leah7378

Ответ:

thicklooney

31.05.2020

Mathematics

19x4+11x3−10x2−8x+21 is the answer when it is simplified.
The correct answer is B

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Ответ:

BeautyxQueen

10.03.2022

Mathematics

6×2=12

42-12=30

b. 15 inches

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(7x4 + 11x3 – x2 – 8x + 6) – (-12x4 + 9x2 – 15) a) -5x4 + 11x3 + 8x2 – 8x – 9 b) 19x4 + 11x3 – 10x2 – 8x + 21 c) 5x4 + 2x3 + 14x2 – 8x + 6 d) -19x4 – 2x3 – 8x2 – x + 9 e) -19x4 – 2x3 – 8x2 – x – 9

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