x^2+6x+8=0 is equivalent to
A) First, use the "completing the square" process to write this equation in the form (x+D)^2=E
The equation x^2+6x+8=0 is not equivalent to the form (x+D)^2=E by completing the square. We can solve it by factoring or using the quadratic formula.
By factoring:
(x+4)(x+2) = 0
Setting each factor equal to 0:
x+4 = 0 or x+2 = 0
Solving for x:
x = -4 or x = -2
Therefore, the equation x^2+6x+8=0 is equivalent to x = -4 or x = -2.