Question 395690
I have solved the equation using factoring and now have to figure out how to solve it by completing the square method. The equation I have is z^2+z-2=0
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z^2+z-2=0
z^2+z = 2
a = 1, b = 1, c = -2
c has to be (b/2a)^2 = (1/2)^2 = 1/4
Add 1/4 to both sides
z^2 + z + 0.25 = 2.25
(z + 0.5)^2 = 1.5^2
z + 0.5 = ± 1.5
z = -2, 1