`(9+2i)(4-3i)-(5-i)(4-3i)`
The expression above is equivalent to which of the following?

(25i ^(2) -9)/(5i+3) For I = sqrt-1, the expression above is equal to which of the following complex numbers ?

(7+3i)/(4-6i) In the complex number system, which of the following is equivalent to the expression above?

Which of the following is equivalent to (4+7i)-(3-2i) ?

Which of the following is equivalent to 2i^(2)+3i^(3) ?

Express (4+3i)/((2+3i)(4-3i)) in the form of x + iy

For all real number x and the imaginary number i, which of the following expressions is equivalent to (x - 3i)^(3) ?

Express (3-2i)/(5+4i)+(3+2i)/(5-4i) in the form of a + ib

((4i^3-i)/(2i+1))^2 can be expressed in a+i b as 3+4i b. 3-4i c. 4+3i d. 4-3i