Answer:
76.3
Step-by-step explanation:
Answer:
4th option
Step-by-step explanation:
x² - 2x - 3 = 0 ( add 3 to both sides )
x² - 2x = 3
using the method of completing the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- 1)x + 1 = 3 + 1
(x - 1)² = 4
160+100+180+60=500
180/500=0.36=36%
50x36%=18
That's your answer lovely~
