take half of 6, which is 3, and square it = 9. Add 9 to both sides x^2 + 6x +9 = 7 + 9....left side is now first binomial (x+3)^2 = 16..............take square root of both sides x+3 = +/- 4 two solutions x = 1 x = -7

I have one more qestion for you.
Given the trinomial answer the questions below: x^2 + 2x + 1 = 0
a) Find the discriminant.
b) Determine the number and type of solutions.
c) Solve the equation. Show your answer in radical form.