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23 April, 09:39

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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Answers (1)
  1. 23 April, 09:57
    0
    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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