Question

The value of X of the equation x2-1=8 is

Answer 1

Answer:

x=3

Step-by-step explanation:

x^2-1=8

x^2=9

x^2=3^2

so x = 3

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Answer 2

Answer:

X=9/2

Step-by-step explanation:

X2 can be written as 2X-1=8

2X-1=8

2x=8+1

x=9/2