Write the expression as a complex number in standard form

Question

Write the expression as a complex number in standard form

(-1+i)-(-2-i)

Answer 1

The standard form for imaginary numbers is a + bi.

So this problem is a matter of simplifying and combining like terms.

(-1 + i) - (-2 - i) = -1 + i - (-2) - (-i) = -1 + i + 2 + i

And I'll let you do the rest. Do you see what I did in distributing the negative and how it makes the last two terms positive? Two negatives multiplied together make a positive.