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= 5 (2x + 3)(2x + 3)
= 5 (2x(2x + 3) + 3(2x + 3))
= 5 (4x² + 6x + 6x + 9)
= 5 (4x² + 12x + 9)
= 20x² + 60x + 45
Semoga membantu.... ^_^
=10x+15
= (10x)x(10x)+15x15
=100xpangkat dua+ 225
hasilnya segi tu
kalau salah maafnya