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anonymous
 one year ago
Calculate the discriminant to determine the number of real roots.
y = x2 + 3x + 9
How many real roots does the equation have?
A.
two real roots
B.
no real roots
C.
one real root
D.
no solution to the equation
anonymous
 one year ago
Calculate the discriminant to determine the number of real roots. y = x2 + 3x + 9 How many real roots does the equation have? A. two real roots B. no real roots C. one real root D. no solution to the equation

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amoodarya
 one year ago
Best ResponseYou've already chosen the best response.0\[\sqrt{b^24ac}=\sqrt{3^24*9*1}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so A there are two real roots?

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.0Ok, I will tell you this. The discriminant for any quadratic in a form of: \(\color{black}{ \displaystyle y=a{\rm x}^2+b{\rm x}+c }\) is: \(\large\color{black}{ \displaystyle {\rm D}=\sqrt{b^24ac} }\)

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.0So, if the discriminant is: an integer  then you can factor the quadratic a real number (not 0, and not integer)  then you just have 2 real roots. an imaginary number (that results from a negative in a square root)  then no real roots, rather, only 2 imaginary roots.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0for people that see this in the future its B
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