1) 3x^2 +5x -12 = 0 (3x -4)(x + 3) = 0 3x - 4 = 0 atau x + 3 = 0 3x = 4 atau x = -3 x = 4/3 HP = { -3, 4/3 } 2) 8x - x^2 = 0 x ( 8 - x) = 0 x = 0 atau 8-x = 0 => x = 8 HP = { 0, 8 } 3) (x -3)(x +2) = 0 x^2 -x -6 = 0 4) x^2 + x -6 = 0, salah satu akar 2, maka (x -2)(x +3) = 0 x -2 = 0 atau x +3 = 0 x = 2 atau x = -3 Jadi akar yang lain -3 5) (x -1)^2 = 0 x - 1 = 0 x = 1
Verified answer
1) 3x^2 +5x -12 = 0(3x -4)(x + 3) = 0
3x - 4 = 0 atau x + 3 = 0
3x = 4 atau x = -3
x = 4/3
HP = { -3, 4/3 }
2) 8x - x^2 = 0
x ( 8 - x) = 0
x = 0 atau 8-x = 0 => x = 8
HP = { 0, 8 }
3) (x -3)(x +2) = 0
x^2 -x -6 = 0
4) x^2 + x -6 = 0, salah satu akar 2, maka
(x -2)(x +3) = 0
x -2 = 0 atau x +3 = 0
x = 2 atau x = -3
Jadi akar yang lain -3
5) (x -1)^2 = 0
x - 1 = 0
x = 1