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Q: What is 7n squared minus 7n?

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n(2n - 1)(2n + 7)

100m^2-49n^2 (10m+7n)(10m-7n) the middle term cancels out.

3x squared minus 25x minus 28

n squared minus n

x = ? 42 = x squared minus x

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It is 2n^3 + 7n^2 - 13n + 3

2-n-7n = 2-8n

n(2n - 1)(2n + 7)

Assuming you meant 7n (not just 7 at the end of your question) - first... simplify the equation. Numbers raised to powers get priority - so your new sum is... 5n - 64n + 25n + n + 7n.... This simplifies to... -26n

100m^2-49n^2 (10m+7n)(10m-7n) the middle term cancels out.

n > 2

3n2 - 7n = 0 n(3n - 7) = 0 So either n = 0 or 3n-7 = 0 ie, either n = 0 or n = 7/3 = 21/3 = 2.33...

Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals", "squared", "cubed" etc. Please use "brackets" (or parentheses) because it is impossible to work out whether x plus y squared is x + y2 of (x + y)2.

-7n2 + 74n + 33 = -7n2 + 77n - 3n + 33 = -7n*(n - 11) - 3*(n - 11) = =(-7n - 3)*(n - 11) = -(7n +3)*(n - 11)

3x squared minus 25x minus 28

n squared minus n

2x squared minus 4