Question

Find the product and fill in the blanks to write in standard complex number form.

(2 + 4)(7 - 3) =____+____i

Answer 1

Recall that i represents the square root of -1, so by squaring it we get -1.

(2 + 4i)(7 - 3i)

= 14 - 6i + 28i + 12
= 26 + 22i