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20 баллов
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1. (6а+8b-2c)/2
2. (-am-lm+cm)/(-m)
3.
[tex] - (6x {}^{2} y - 4x {}^{2} z - 6xyz) \div 2x[/tex]
4.
[tex] ( - 42ab {}^{2} - 9a {}^{3} b {}^{4} + 16a {}^{2} b {}^{5} ) \div ( \frac{ - 3}{4} ab)[/tex]
5.
[tex](3a {}^{3} - 6 {a}^{7} - 15a {}^{10} ) \div 3a {}^{3} [/tex]
20 баллов
__
1. (6а+8b-2c)/2
2. (-am-lm+cm)/(-m)
3.
[tex] - (6x {}^{2} y - 4x {}^{2} z - 6xyz) \div 2x[/tex]
4.
[tex] ( - 42ab {}^{2} - 9a {}^{3} b {}^{4} + 16a {}^{2} b {}^{5} ) \div ( \frac{ - 3}{4} ab)[/tex]
5.
[tex](3a {}^{3} - 6 {a}^{7} - 15a {}^{10} ) \div 3a {}^{3} [/tex]
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Answers & Comments
Пошаговое объяснение:
1.
(6а + 8b - 2c) / 2 = 3a + 4b - c,
2.
(-am - lm + cm) / (-m) = a + l - c,
3.
-(6x²y - 4x²z - 6xyz) : 2x = -(3xy - 2xz - 3yz),
4.
(-42ab² - 9a³b⁴ + 16a²b⁵) : (-3/4 ab) =
= (-42ab² - 9a³b⁴ + 16a²b⁵) * (-4/3ab) = 56b + 12a²b³ - 21 1/3 ab⁴,
5.
(3a³ - 6a⁷ - 15a¹⁰) : 3a³ = 1 - 2a⁴ - 5a⁷