Question

If (x+4) (x-4)=9 ,then the value of x is

Answer 1

(x+4)(x-4)=9

x^2-4^2=9

x^2-16=9

x^2=9+16

x^2=25

x=√25

x=5

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Answer 2

Answer:

Step-by-step explanation  

X2 --- 16  = 9

X2  = 25

X = +5 OR -5