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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

Evaluate the algebraic expression If your result is a complex number type it in the form abi and do not type any spaces between the charactersIf yx2x4 evaluate class=

Respuesta :

We have the next expression

[tex]y=x^2+x-4[/tex]

if x=2i

[tex]y=(2i)^2+(2i)-4[/tex]

We simplify

[tex]y=4(-1)+2i-4=-4+2i-4=-8+2i[/tex]

ANSWER

if x=2i

y=-8+2i

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