Addition
Subtraction
10

Find the sum of the first 50 positive integers.

1,275.

10

If f(x) =x2+5 and g(x)=2x-3, find the expression for f(x)-g(x).

x2-2x+8.

11

Add the complex numbers (3+4i) and (2-7i)

5-3i

12

1+1/2+1/4+1/8...

2.

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