How do you solve (x - 9) ^ { 2} - 4= 0(x−9)2−4=0?

1 Answer
Elias
Apr 17, 2018

x=11,7x=11,7

Explanation:

(x-9)^2 -4 =0 (x−9)2−4=0
(x-9)^2 = 4 (x−9)2=4
(x-9) = +-sqrt 4(x−9)=±√4
x-9 = +-2 x−9=±2
x=11, 7x=11,7
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