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px²-6x+1=0 -----> a = p , b = -6 dan c = 1
Rumus :
nilai m+n = -b/a , jadi
m + n = -6/p
m + 2m = -6/p
3m = - 6/p
m = -6/3p
m = - 2/p
nilai mn = c/a
mn = 1/p
m(2m) = 1/p
2m² = 1/p
2(-2/p)² = 1/p ----------> masukkan nilai m = - 2/p
2 . 4/p² = 1/p
8/p² = 1/p
8p = p²
8 = p²/p
p = 8
Jadi nilai p adalah 8