Answer: This is the completed square form, where a = -7 and b = 4.
Step-by-step explanation:x^2 - 14x + 45 = 0
To complete the square, add and subtract (14/2)^2 = 49 from the left-hand side:x^2 - 14x + 49 - 49 + 45 = 0
Factor the first three terms and simplify:(x - 7)^2 - 4 = 0
This is the completed square form, where a = -7 and b = 4.