Question

Solve the equation and express each solution in form a+bi. (4+9t)(7-4t)

Answer 1

(4+9t)(7-4t)

(4+9t)(7+(-4t)

(4)(7) + (4)(-4t) + (9t)(-4t)

28 -16t + 63t - 36t^2

= -36^2 + 47t + 28