" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
dengan melengkapan kuadrat
[2x² - 4x - 1] : 2 = 0 : 2
x² - 2x - 1/2 = 0
x² - 2x = 1/2
x² - 2x + 1 = 1/2 + 1
(x - 1)² = 3/2
x - 1 = + √3/2
x = + √3/2 + 1
dengan rumus abc
a=2
b=-4
c=-1
x1,x2= [4 +- √(-4)²-(4.2.-1)]/2.2
x1 = (4+2√6) /4 = 1+1/2 √6
x2 = (4-2√6) /4 = 1-1/2 √6