Question

Express the following in form a+ib form and state the value of a and b (2+3i)(2-3i)

Answer 1

Answer:

Step-by-step explanation:

(2+3i)(2-3i)=4-9(i^2)

=4-9(-1)

=4+9=13=13+0.i

Where a=13,b=0

Answer 2

Answer:

13+i0=a+ib

Step-by-step explanation:

(a+ib)(a-ib)=a square +b square

so,...a=13,b=0