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oksanavinitska
@oksanavinitska
October 2021
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40 баллов, если поможете!!!!!!!!!!!!!!!!!!
Превратите выражение в многочлен:
1) (4х^2 -х)3х
2) 4в^2-(а-2в)(а+2в)
3) -х^2-(х+4)(х-3)
Помогите! Срочно!
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Answers & Comments
hovsep50
1) (4x² - x) · 3x = 12x³ - 3x²
2) 4b² - [ a² - (2b)²] = 4b² - a² + 4b² = 8b² - a²
3) -x² - [ x² + 4x - 3x -12] = -x² -x² -x + 12 = -2x² - x + 12
2 votes
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Answers & Comments
2) 4b² - [ a² - (2b)²] = 4b² - a² + 4b² = 8b² - a²
3) -x² - [ x² + 4x - 3x -12] = -x² -x² -x + 12 = -2x² - x + 12