Jawab:
Penjelasan dengan langkah-langkah:
34. 2x⁴-2x³+px²-x-2
=2x⁴+2x³-4x³+px²+x-2x-2
=2x³(x+1)-4x²(x+1)+x(x+1)-2(x+1)
maka,
px² = -4x²+x²
px² = -3x²
p = -3
35. teori dasar : ax³+bx²+cx+d=0
soal : ax³-2x²-11x+6=0
*)x1.x2.x3 = -3
-d/a = -3
-6/a = -3
-6/-3 = a
2 = a
*)x1.x2+x2.x3+x1.x3
= c/a
= -11/2
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Jawab:
Penjelasan dengan langkah-langkah:
34. 2x⁴-2x³+px²-x-2
=2x⁴+2x³-4x³+px²+x-2x-2
=2x³(x+1)-4x²(x+1)+x(x+1)-2(x+1)
maka,
px² = -4x²+x²
px² = -3x²
p = -3
35. teori dasar : ax³+bx²+cx+d=0
soal : ax³-2x²-11x+6=0
*)x1.x2.x3 = -3
-d/a = -3
-6/a = -3
-6/-3 = a
2 = a
*)x1.x2+x2.x3+x1.x3
= c/a
= -11/2