Respuesta :

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Answer:

m= - 5/2 or m = 1/2

Step-by-step explanation:

4m^2 + 8m - 4 - 1 = 0

4m^2 + 8m - 5 = 0

(2m + 5)(2m - 1) = 0

2m+5 = 0 or 2m -1=0

m= - 5/2 or m = 1/2