Solve the quadratic equation by completing the square . x ^ 2 + 4x - 3 = 0

a) x=4 pm sqrt 7

b) x=2 pm sqrt 7

c)x=-4 pm sqrt 7

d) x=-2 pm sqrt 7

D

Step-by-step explanation:

x²+4x=3

add 4 both sides

x²+4x+4=7

(x+2)²=7

x=-2±√7

what do u need to know

step-by-step explanation:

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