SOLUTION: Use quadratic formula to solve for equation z(2z+3)=-2

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Question 45324This question is from textbook
: Use quadratic formula to solve for equation
z(2z+3)=-2This question is from textbook

Answer by fractalier(2101) About Me  (Show Source):
You can put this solution on YOUR website!
Okay, from
z(2z+3) = -2
we get
2z^2 + 3z = -2
2z^2 + 3z + 2 = 0
now apply the quadratic formula and get
z = (-3 ± sqrt(9 - 16)) / 4
z = (-3 ± sqrt(-7)) / 4
z = (-3 ± i*sqrt(7)) / 4