Question

Type the correct answer in the box.

Fill in the missing term in the equation.
(1 + 2)(2+1) + blank
= 5(2+i)

Answer 1

Expanding the left side of the equation:
(1 + 2)(2 + 1) + blank
= 3(3) + blank
= 9 + blank

Expanding the right side of the equation:
5(2 + i)
= 10 + 5i

Since the left side of the equation (9 + blank) is equal to the right side (10 + 5i), we can deduce that the missing term should be equal to 1i.

Therefore, the missing term in the equation is "1i".