The number 100 is added to x² - 20x = 5 to complete the square
What is an equation?
An equation is an expression that shows the relationship between two or more numbers and variables.
Given the equation:
x² - 20x = 5
To solve using completing the square, add to both sides the square of half the coefficient of x, that is:
x² - 20x + 100 = 5 + 100
The number 100 is added to x² - 20x = 5 to complete the square
Find out more on equation at: https://brainly.com/question/2972832
