Question

How do you solve `x^2-14x+45=0` by completing the square?

Answer 1

`x^2-14x+45 =0`

`(x^2-14x+7^2) -7^2 +45 = 0`

`(x-7)^2 = 4`

`x-7 = +-2`

`x= 7+-2`

`x=9` or `x=5`