Question

I keep getting the wring answer. I don’t know what I’m doing wrong.

Answer 1

we have the expression

`y=x^2+x-4`

Remember that

`i^2=-1`

Evaluate

For x=2i

substitute

`y=(2i)^2+2i-4`
`y=4i^2+2i-4`
`\begin{gathered} y=4(-1)+2i-4_{} \\ y=-4+2i-4 \\ y=-8+2i \end{gathered}`