The solution to the problem, x² − 7x = 5 obtained by completing the square would be 7²
How to solve the problem
Completing the square works by manipulating the equation to transform it into a perfect square trinomial, which can be easily factored and solved.
We begin by moving the constant term to the right side of the equation as shown
x² − 7x = 5
The coefficient of the x term is -7
Square it = 7²
Add 7² to both sides of the equation
x² − 7x + 7² = 5 + 7²
(x - 7/2)² = 54
x - 7/2 = ± √54
x = 7/2 ± √54