1.The product of two complex number 2+3i and 1-i is:

Modulus of complex number 3i-4 is:

Prove that: (i) the sum of a complex number and its conjugate is real (ii) the product of a complex number and its conjugate is real.

Find the sum and product of the complex number (3-4i) with its conjugate.

Find the sum and product of the complex number (-1 +2i) with its conjugate.

Find the product of complex numbers (2+9i),(11+3i) .

Find the multiplicative inverse of the product of complex numbers: 3+4i,5-12i .

The difference of the following complex numbers -3+2i and 13-i

Fidnthe difference of the complex numbers: 1-i and -1+6i