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Verified answer
Bab Persamaan KuadratMatematika SMP Kelas VIII
(3a - 4b)²
= (3a)² - 2 . 3a . 4b + (4b)²
= 9a² - 24ab + 16b²
9a^2-12ab-12ab+16b^2
9a^2-24ab+16b^2