Buktikan 2x² + 5x + 7 ≠ 0 By Admin ReiPosted on December 7, 2022 Buktikan 2x² + 5x + 7 ≠ 0 Anggap x = 1jadi 2 x 1² + 5 x 1 + 7 = 14 ≠ 0