x^2 – 14x + 33 = 0
Complete the square
Remember that
14/2=7
so
(x^2-14x+7^2)-7^2+33=0
(x^2-14x+49)-49+33=0
Rewrite as perfecy squares
(x-7)^2-16=0
(x-7)^2=16
therefore
the answer is
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