Topic: akar persamaan
a*X^2+b*X+c=0
D=(b^2+/-(sqrt(-4*a*c)))/(2*a*c)
klo ga salah si rumusnya kayak gitu....
Udah lupa he... d IT dah gk diajarin lagi....
(Cuma bwt ngetes posting pertama, klo ada yg salah jngn d ambil hati y..)
Pererat tali silaturahmi dan komunikasi antar warga smagawi
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a*X^2+b*X+c=0
D=(b^2+/-(sqrt(-4*a*c)))/(2*a*c)
klo ga salah si rumusnya kayak gitu....
Udah lupa he... d IT dah gk diajarin lagi....
(Cuma bwt ngetes posting pertama, klo ada yg salah jngn d ambil hati y..)
kalo (x+y)^2=x^2+2xy+y^2
terus (x-y)^2=x^2-2xy+y^2
tapi kalo x^2-y^2=(x+y)(x-y)
hmmm..... bener ga
waduh, aq g mudeng matematika. lupa semuaaaaaaaaaaaaa.................
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