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x +8
x +3
8x+3x = 11x
(x+8)(x+3) = 0
x +8 =0 x+3 = 0
x = -8 x = -3
CS =(-8;-3)
(x+4)(x-4) = 0
x+4 = 0 x-4 = 0
x = -4 x = 4
CS = (-4; +4)
x(x-7) = 0
x = 0
x-7= 0
x = 7
CS = (0;7)
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