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Q: How do you get 3 to the power of n plus 2 plus (3 to the power of n plus 3 minus 3 to the power of n plus 1)?

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-1

It is 20.

-2 times -2 = plus 4 since minus times minus is plus

4

2 minus 2/5 plus 1/2 minus 4 = -1.9

The answer is 0.

9A:2 - 1 - 1 + 1 - 1 + 3 - 2 + 6 = 7The answer is seven.

3x3 - 3x2 + 2x - 2 = 3x2(x - 1) + 2(x - 1) = (3x2 + 2)(x - 1)

if the question u are asking is something like this 1/2 - ( - 1/2 ) then the answer is simple all you have to do is solve the equation like this 1/2 - ( - 1/2 ) = 1/2 + 1/2 = 2/2 = 1 its the - (-1/2) that is important remember the rule minus and minus equal plus plus and plus equal plus minus and plus equal minus remember and i hope it helps :)

(10+9)+(1−1)+(2−2)+(3−1)+(4−4) = 21This is the same equation rewritten: (10+9)+(3−1) = 21This can be done as 1-1, 2-2, 4-4 cancel themselves out.

When you are using non-standard definitions of "plus" and "minus", or of "equal".

1 (found on google)

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