1. Evaluate 7m + 3mn; when m=8 and n=14? 2. Simplify: 675 ÷ (6+9 ÷ 3) 3. (3x - 2)(4x +1)

asked May 17, 2021 202k views

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1. Evaluate 7m + 3mn; when m=8 and n=14?

2. Simplify: 675 ÷ (6+9 ÷ 3)

3. (3x - 2)(4x +1)

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2 votes

Answer:

1. 392

2. 75

3.
12x^(2) - 5x -2

Explanation:

1. 7×8 + 3×8×14 = 56 + 336 = 392

2. 675 ÷ (6 + 3) = 675 ÷ 9 = 75

3.

x^(2) +
3x -
8x - 2 =
12x^(2) -5x-2

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