Mathematics: 1. (5m + 3n) + (4m - 6n) a. 9m + 9n b. 9m - 3n c. 9m + 3n d. 13mn 2. multiply: (x + 1)(x - 2) a. x2 - 2 b. 2x - 2 c. x2 - 2x - 2 d. x2 - x - 2

1. (5m + 3n) + (4m - 6n) a. 9m + 9n b. 9m - 3n - id15346999394760388, Robinlynn228

Ответ:

unknown9263

16.01.2022

1. (5m + 3n) + (4m - 6n)
=9m - 3n ...combine like terns
answer is

B. 9m - 3n

2. Multiply: (x + 1)(x - 2)
=x^2 +x -2x - 2
=x^2 -x - 2
answer

D. x2 - x - 2

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Ответ:

Nekomancer5291

16.01.2022

Mathematics

1 is C because you have to add 5m and 4m then you subtract 3n and 6n , and because it says to add them you have to put the addition sign between the two.

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Ответ:

Onlyoneeniyaaa

17.02.2020

Mathematics

7/9 is equivalent to 0.7777777. Since the 7 keeps repeating and has no visible end, it repeats.

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1. (5m + 3n) + (4m - 6n)
a. 9m + 9n
b. 9m - 3n
c. 9m + 3n
d. 13mn
2. multiply: (x + 1)(x - 2)
a. x2 - 2
b. 2x - 2
c. x2 - 2x - 2
d. x2 - x - 2

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