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Diketahui :- (3x + 4)² = (3x + 4)(3x + 4)
Ditanya : (3x + 4)² = ....?
Penyelesaian :
(3x + 4)²
= (3x + 4)(3x + 4)
= (3x × 3x) + (3x × 4) + (4 × 3x) + (4 × 4)
= 9x² + 12x + 12x + 16
= 9x² + 24x + 16
Jawaban : b. 9x² + 24x + 16
Maaf Kalau Salah
(3x+4)²
=(3x+4)(3x+4)
=(3x.3x)+(3x.4)+(4.3x)+(4.4)
= 9x²+12x+12x+16
= 9x²+24x+16 ------ B
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