Calculate the value of the dicriminant of x2+4x+4=0 "See, Add Details"?

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a) show your work.

b) By examining the sign of the discriminant in part a, how many x- intercepts would the graph of y = x2+4x4 have? Why?

2007-07-26 08:49:26 · 2 answers · asked by yuleydis77 1 in Science & Mathematics ➔ Mathematics

a). The discriminant is b²-4ac= 16-16 = 0.
b). There is 1 x - intercept, because when the
discriminant is 0 the graph is tangent to the x-axis.

2007-07-26 08:59:34 · answer #1 · answered by steiner1745 7 · 0⤊ 0⤋

-2

2007-07-26 15:57:15 · answer #2 · answered by Michael S 2 · 0⤊ 1⤋