(2x²+12x)-(15x²+3x-7)=0 By Admin ReiPosted on December 7, 2022 (2x²+12x)-(15x²+3x-7)=0 Jawab: (2x² + 12x) – (15x² + 3x – 7) = 0 = 2x² + 12x – 15x² – 3x + 7 = -13x² + 9x + 7