" (ii) "(B+5i)(2+6i)

(3+5i)(2+6i)

Find the complex conjugate of (2 + 5i) (-4 + 6i) .

Express the following in the form a+ib: (3+5i) (2+6i)

Show that ((19- 7i)/(9 + i))^(12) + ((20 - 5i)/(7 - 6i))^(12) is real.

Simplify each of the following and express it in the form a + ib : {:((i),2(3+4i)+i(5-6i),(ii),(3+sqrt(-16))-(4-sqrt(-9))),((iii),(-5+6i)-(2+i),(iv),(8-4i)-(-3+5i)),((v),(1-i)^(2)(1+i)-(3-4i)^(2),(vi),(5+sqrt(-3))(5-sqrt(-3))),((vii),(3+4i)(2-3i),(viii),(-2+sqrt(-3))(-3+2 sqrt(-3))):}

Which of the following complex numbers is equal to (5 + 12i) − ( 9i^2 − 6i), for i = sqrt(−1) ?

Express the following in the form of a + b i :(i) (-5i)(1/8i) (ii) (-i)(2i)(-1/8i)^3

Express the following in the form of a" "+" "b i : (i) (-5i)(1/8i) (ii) (-i)(2i)(-1/8i)^3

Write the following in the form x+iy: (i) (3+2i)(2-i) (ii) 2i^(2)+6i^(3)+3i^(16)-6i^(19)+4i^(25) . (iii) ((3-2i)(2+3i))/((1+2i)(2-i)) .

If i=sqrt(-1), and ((7+5i))/((-2-6i))=a+bi , where a and b are real numbers, then what is the value of |a+b| ?