Fill in the blanks: the root of equation (x + 1) = x + 1 is? If x square + 6x + k is a complete square expression, then the value of K is?

Fill in the blanks: the root of equation (x + 1) = x + 1 is? If x square + 6x + k is a complete square expression, then the value of K is?


1. The root is - 1 or 0 2. K = 9