Question

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

Answer 1

Solution: `x=5 or x=3`

Explanation:

`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]