Answer:
x = 4 ± 
Step-by-step explanation:
Given
x² - 8x = 3
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- 4)x + 16 = 3 + 16
(x - 4)² = 19 ( take the square root of both sides )
x - 4 = ±
( add 4 to both sides )
x = 4 ±
To convert to a decimal, divide by 100.
75 / 100 = .75
Answer:
Subtract 9 from both sides of the equation.
A fraction is a short way of writing a division, and when you
actually perform the division, you get the decimal.
Either of them can be written as the other one.