" (ii) "(5+i9)+(-3+i4)

Find the following as a single complex number x+ iy = (5+i9) (-3+ i4)

Simplify : (i)" "(-2i)((1)/(6)i)" "(ii)" "(-i)(3i)((-1)/(6)i)^(3)" "(iii)" "4 sqrt(-4)+5 sqrt(-9)-3 sqrt(-16)

3.Find the following as a single complex number x+ iy (5+i9)(-3+i4)

Express the result in the form x+iy, where x,y are real number i=sqrt(-1) : (i) (5+9i)-:(-3+4i) (ii) [(sqrt(5)+(i)/(2))(sqrt(5)-2i)]-:(6+5i) (iii) ((1-i)(2-i)(3-i))/(1+i) (iv) (1+3i)/((1-2i)^(2))

Find the modulus of ((3+2i) (1+i) (2+3i))/((3+4i) (4+5i))

Find x and y if: (i) (x+iy) + (7-5i)=9+4i

Find the square root of the following complex number ((2+3i)/(5-4i) + (2-3i)/(5+4i))

Answer the following. Simplify the following an express in the form a + ib: (5 + 7i) / (4 + 3i) + (5 +7i) / (4 - 3i)

Simplify and express the result in the form (a+b):(i)(3+sqrt(-16))-(4-sqrt(-9))(ii)(7-5i)(3+i)