What number would you add to both sides of x2 – 20x = 5 to complete the square ?

Question

asked May 14, 2021 67.7k views

2 Answers

RenatoUtsch · Answer 1 · 2021-05-18T08:23:39+0000

Answer:

100

Explanation:

x^2 – 20x = 5

Take the coefficient of x

-20

Divide by 2

-20/2 = -10

Square it

(-10)^2 - 100

Add this to both sides

x^2 – 20x+100 = 5+100