Solve and express complex solution in standard form a bi x2

Solve and express complex solution in standard form a + bi x^2 + 4x + 11 = 0

x^2 + 4x +11 =0

solve the quadratic using quadratice formula: ax^2 +bx +c=0

x = (-b +/- sqrt(b^2 -4ac) )/2a

= (-4 +/- sqrt(16 -4*11) )/2

= (-4 +/- sqrt(-28))/2

= -2 +/- i*sqrt7

In the form a +ib : x = 2 +i*sqrt7 , 2 - i*sqrt7