Penjelasan dengan langkah-langkah:
x = 3 -> (x-3) = 0
x = -5 -> (x+5) = 0
(x-3)(x+5) = 0
x²+5x-3x-15 = 0
x²+2x-15 = 0
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Penjelasan dengan langkah-langkah:
x = 3 -> (x-3) = 0
x = -5 -> (x+5) = 0
(x-3)(x+5) = 0
x²+5x-3x-15 = 0
x²+2x-15 = 0