The roots of an equation are x = -1 ± i. The equation is x2 +
+ 2 = 0.

x^2 + 2x + 2.

Step-by-step explanation:

Write it in factor from:

(x -  (-1 + i))(x -  (-1 - i)) = 0

(x + 1 - i)(x + 1 + i) = 0

= x^2 + x + ix + x + 1 + i - ix - i -i^2

=  x^2 + 2x + 1  + 1

= x^2 + 2x + 2.

ok

step-by-step explanation:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!