Question

I get see photo. I l ow this is wrong. Can you help?

Answer 1

Given the equation:

`y=x^2+x-4`

We will find the value of (y) when ( x = 2i )

Note: i² = -1

so, when x = 2i

`y=(2i)^2+(2i)-4`

Simplifying the answer

So,

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

So, the answer will be y = -8+2i