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Which shows the correct substitution of the values a, b, and c from the equation 0 = – 3x2 – 2x + 6 into the quadratic formula?

1 Answer

4 votes
it is in form
0=ax^2+bx+c
0=-3x^2-2x+6
a=-3
b=-2
c=6

so
x=
(-b+/- √(b^2-4ac) )/(2a)
x=
(-(-2)+/- √((-2)^2-4(-3)(6)) )/(2(-3))
x=
(2+/- √(4+72) )/(-6)
x=
(2+/- √(76) )/(-6)
x=
(2+/- 2√(19) )/(-6)
x=
(1+/- √(19) )/(-3)
x=
(1+ √(19) )/(-3) or
(1- √(19) )/(-3)




User Abey Tom
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