Question

If a = - i and b = 3 , then find the value of the a ^ 2 * b in fully simplified form .

Answer 1

`a^2 * b = 3i^2`

Explanation:

Given

`a = -i`

`b = 3`

Required

Determine
`a^2 * b`

To do this, we simply substitute -i for a and 3 for b in
`a^2 * b`

This gives:

`a^2 * b = (-i)^2 * 3`

Evaluate the expression in bracket

`a^2 * b = i^2 * 3`

This gives:

`a^2 * b = 3i^2`