Roots

Determine the quadratic equation absolute coefficient q, that the equation has a real double root and the root x calculate:

5x2+9x+q=0


Correct answer:

q =  4.05
x =  -0.9

Step-by-step explanation:

D=0=>D2=0 D2=b24aq=0 q=4592=4.05 5x2+9x+4.05=0
x=259=0.9



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