Question

Evaluate the algebraic expression. If your result is a complex number type it in the form a+bi and do not type any spaces between the characters.If y=x^2+x-4, evaluate y given x=2i.y=Answer

Answer 1

We have the next expression

$y=x^2+x-4$

if x=2i

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

We simplify

$y=4(-1)+2i-4=-4+2i-4=-8+2i$

ANSWER

if x=2i

y=-8+2i