Respuesta :
Answer:
-√5/3
Step-by-step explanation:
x^2 - 4x - 5 = 0
+5 +5
√x^2 - 4x = √5
x - 4x = √5
-3x = √5
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-3 -3
x = -√5/3
The answer is -√5/3.
The quadratic equation answer is: x^1 = -1; x^2=5 and the number of solutions are 2 real solutions. Hope this helps :)