khanhtrang03021107 khanhtrang03021107

26-09-2021
Mathematics

contestada

tìm giá trị m biết f(x)=m^2-2x+8 có nghiệm là -1

Respuesta :

hongne110807 hongne110807

26-09-2021

Answer:

Step-by-step explanation:

Thay x= -1 vào ta có:

f(-1)=m²-2(-1)+8=0

<=> m²= 10

<=> m= √10

m= -√10

Vậy m =.......

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