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(7x-2)(x+1) = 0
7x-2 = 0 atau x+1 = 0
7x = 2 x = -1
x = 2/7
2) 3x²-14x-5 = 0
(3x+1)(x-5) = 0
3x+1 = 0 atau x-5 = 0
3x = -1 x = 5
x = -1/3
3) 10x²+x-3 = 0
(2x-1)(5x+3) = 0
2x-1 = 0 atau 5x+3 = 0
2x = 1 5x = -3
x = 1/2 x = -3/5
(x + 1) (7x - 2)
x = -1
x = 2/7
3x² - 14x - 5
(3x +1) ( x - 5)
x = -1/3
x = 5
10x² + x - 3 = 0
(5x + 3) ( 2x - 1)
x = -3/5
x = 1/2