" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
rumus abc = -b±√b²-4ac/2a
dimana ax²+bx+c = 0
contoh
f. 3x²+x-4 = 0
a = 3
b = 1
c = -4
-b±√b²-4ac/2a
-1±√1²-4.3.-4/2.3
-1±√1+48/6
-1±√49/6
-1±7/6
-1+7/6 = 1
-1-7/6 = - 4/3
x1.2 =
=
=
=
=
x1 =
= 6/6
= 1
x2 =
=
=
g) 3x² - 7x + 2 = 0 ----> a = 3 ; 7 = - 7 ; c = 2
x12 =
x12 =
x12 =
=
=
x1 =
=
= 2
x2 =
=
=
nomor berikutnya ,kerjakan sendiri seperti di atas sebagai latihan ...