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15-02-2017
Mathematics

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Calculate the discriminant to determine the number of real roots.
Y=x^2+3x+9
How many real roots does the equation have?
A) no real roots
B) no solution to the equation
C) one real root
D) two real roots

Respuesta :

Аноним Аноним

17-02-2017

D = b^2 - 4ac = 3^2 - 4*1*9
= 9 - 36 = -27

because its negative there are no real roots

just 2 imaginary roots

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