Question

Express – (-3+5i) – (4+9i) in the standard form a + ib.

Answer 1

Given: The term – (-3+5i) – (4+9i)

To find: Express – (-3+5i) – (4+9i) in the standard form a + ib.

Solution:

• Now we have given the term as – (-3+5i) – (4+9i)

• Let it be x, then :

                   x = – (-3+5i) – (4+9i)

• Expanding it, we get:

                   x = 3 - 5i - 4 - 9i

• Now summing up common terms we get:

                   x = -1 -i(5+9)

                   x = -1 - 14i

Answer:

           So in standard form, the given expression can be written as -1 - 14i