Persamaan Kuadrat
2x² + 6x - 1 = 0
x1 + x2 = -b/a = -6/2 = -3
x1 x2 = c/a = -1/2
x1² + x2²
= (x1 + x2)² - 2x1x2
= (-3)² - 2(-1/2)
= 9 + 1
= 10
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Persamaan Kuadrat
2x² + 6x - 1 = 0
x1 + x2 = -b/a = -6/2 = -3
x1 x2 = c/a = -1/2
x1² + x2²
= (x1 + x2)² - 2x1x2
= (-3)² - 2(-1/2)
= 9 + 1
= 10