Respuesta :

konrad509
[tex]b^2-4ac=5^2-4\cdot1\cdot4=25-16=9[/tex]

Answer:

9

Step-by-step explanation:

This equation is in the form

ax²+bx+c = 0

Substituting our values for a, b and c in,

5²-4(1)(4) = 25-16 = 9

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