Write the sum −3+5−7+9−11+13−15+17−19+21 using sigma notation. The form of your answer will depend on your choice of the lower limit of summation.

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Step-by-step explanation:

Given the expression : −3+5−7+9−11+13−15+17−19+21

Number of values : 1 up to 7

Take initial as - 1, since the expressed value starts with negative

Difference of 2 between the absolute value of each successive integer.

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

ab will be equal to