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blsea [12.9K]
3 years ago
8

I need helpppp!!!!!!

Mathematics
1 answer:
Marrrta [24]3 years ago
4 0

Answer:

just add all of them up

Step-by-step explanation:

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What is the simplified form of k-5+7
ohaa [14]

Answer:

k+2 or k=2

Step-by-step explanation:

combine -5 and 7 to get your answer

4 0
3 years ago
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Can someone help me out ? Don't just guess the answer :(
Monica [59]
1) 2m+6 / m² + 7m - 12  +  (m+2)/(m+4)

= 2(m+3) / (m+4)(m+3)  + (m+2)/(m+4)

= 2/(m+4) + (m+2)/(m+4)

= 2+m+2 / (m+4)

= m+4 / m+4

= 1  [ Option A ]

Answer 2) 3/ (x+4)  + 7/ (x-3)

=  3(x-3) + 7(x+4)/ (x² +x - 12)

= 3x-9 + 7x + 28 / (x² +x - 12)

= 10x + 19 / (x² +x - 12)  [ Option A ]

Hope this helps!
5 0
3 years ago
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(x+3)(x-3) sum of difference​
matrenka [14]
4x-sum to
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Equals3
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3 years ago
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Dafna1 [17]
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3 years ago
Prove 151^3-25^3 is divisible by 126
stiks02 [169]

9514 1404 393

Answer:

  151 -25 = 126 is a factor of the difference of those cubes

Step-by-step explanation:

The expression can be factored as ...

  a^3 -b^3 = (a -b)(a^2 +ab +b^2)

  151^3 -25^3 = (151 -25)(151^2 +151·25 +25^2)

  = 126(151^2 +151·25 +25^2)

That is, 126 is a factor of the difference of the given cubes. The difference is divisible by 126.

__

Your calculator tells you 151^3 -25^3 = 126 · 27201.

4 0
3 years ago
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