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Marat540 [252]
3 years ago
9

The expression 7n-8n-5+n+2-1 can be simplified to:

Mathematics
2 answers:
alexdok [17]3 years ago
7 0

Answer:

-4

Step-by-step explanation:

combine like terms 8n-8n-6+2

8n-8n=0 so

-6+2=-4

kifflom [539]3 years ago
3 0

Answer:

It can be simplified to: -4

Step-by-step explanation:

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FOIL stands for First, Outside, Inside, Last. 

In your equation you have (6x-2)(6x+2)
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First: Means first terms of each set. In this case 6x and 6x
6x x 6x = 36x^{2} Now you have your first term in the sequence.

Outside: Means terms found in the outside areas of the whole equation, in this case it is 6x and 2
6x x 2 = 12x Now this is the second term

Inside: Means terms found in the inside areas of the whole equation, in this case it is -2 and 6x
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Last: Means the last terms of each set. In this case it is -2 and 2
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Now you have what you need for your new equation:

36x^{2} + 12x -12x - 4

Because your second and third terms are like terms, you can combine them by doing the operation indicated. 12x-12x = 0 so now you can cancel it out from your equation and your left with:

36 x^{2} - 4 This is your product
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Step-by-step explanation:

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