How do you solve using the completing the square method $x^2 - 8x + 20 = 5$ ?

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Answer 1 · 2017-01-22T13:04:38

Solution: $x=5 or x=3$

$x^2 -8x+20 =5 or x^2-8x+16+4=5 orx^2-8x+16=5-4 or (x-4)^2 =1 or x-4= +-sqrt 1 or x-4= +-1 :. x=4+1=5 or x=4-1=3$
Solution: $x=5 or x=3$ [Ans]

How do you solve using the completing the square method x^2 - 8x + 20 = 5x^2 - 8x + 20 = 5?