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3x - 5x ≥ - 9 - 5
- 2x ≥ - 14
2x ≤ 14
x ≤ 14 : 2
x ≤ 7
no.2 px² - 6x + 1 = 0 ----> a = p ; b = - p ; c = 1 ;
x1 + x2 =
2.x2 + x2 =
3.x2 =
x2 =
subtitusi pada persamaan
p . - 6 + 1 = 0
- = - 1
= - 1
p = 8
no.3 A x B - C = -
= -
=