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Verified answer
Mapel : MatematikaKelas : VIII SMP
Bab : Persamaan Kuadrat
Rumus dasar :
(a + b)(a - b) = a² - b²
Pembahasan :
(2x + 5)(2x - 5)
= (2x)² - (5)²
= 2²x² - 5²
= 4x² - 25