Please help with number 21 pleaseee!!!

2 answers:

7 0

I think it’s the first

3 0

The first one I’m sure of but I think the third might be one too

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Mariana [72]

The correct answer is D

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irina1246 [14]

Answer:

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Step-by-step explanation:

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34kurt

12+4x^2+3x^3-2x is the answer.

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Elza [17]

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I am Lyosha [343]

Answer:

535

Step-by-step explanation:

8 x 7 = 56

15 x 17 = 255 . 255 / 2 = 127.5

15 x 7 = 105

17 x 7 = 119

119 + 105 + 127.5 + 127.5 + 56 = 535

6 0

3 years ago