no 11)
berarti
17² + p(17) - 204 = 0
289 + 17p = 204
17p = 204 - 289
17p = - 85
p = -5
no 12)
(-3)² + (c+6).(-3) + c -5 = 0
9 -3c - 18 + c - 5 = 0
-2c -14 = 0
-2c = 14
c = -7
persamaan kuadrat =
x² + (c+6)x + c - 5 = 0
x² + (-7+6)x + (-7-5) = 0
x² - x - 12 = 0
(x+3) (x-4) = 0
x = -3 atau. x = 4
akar yg lain = 4
no 13)
2² + (t-5).2 + t²- 18 = 0
4 + 2t - 10 + t² - 18 = 0
t² + 2t - 24 = 0
(t+6) (t-4) = 0
t = -6 atau. t = 4
kalo t = -6
x² -11x + 18 = 0
(x-2) (x-9) =0
x = 2 atau x = 9
kalo t = 4
x² - x -2 = 0
(x+1) (x-2) =0
x = -1 atau x = 2
akar yg lain = -1 atau 9
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no 11)
berarti
17² + p(17) - 204 = 0
289 + 17p = 204
17p = 204 - 289
17p = - 85
p = -5
no 12)
berarti
(-3)² + (c+6).(-3) + c -5 = 0
9 -3c - 18 + c - 5 = 0
-2c -14 = 0
-2c = 14
c = -7
persamaan kuadrat =
x² + (c+6)x + c - 5 = 0
x² + (-7+6)x + (-7-5) = 0
x² - x - 12 = 0
(x+3) (x-4) = 0
x = -3 atau. x = 4
akar yg lain = 4
no 13)
berarti
2² + (t-5).2 + t²- 18 = 0
4 + 2t - 10 + t² - 18 = 0
t² + 2t - 24 = 0
(t+6) (t-4) = 0
t = -6 atau. t = 4
kalo t = -6
x² -11x + 18 = 0
(x-2) (x-9) =0
x = 2 atau x = 9
kalo t = 4
x² - x -2 = 0
(x+1) (x-2) =0
x = -1 atau x = 2
akar yg lain = -1 atau 9