tentukanlah hasil dari:
1. (3x+4) (3x+2)
2. (6x+1)²
3. (4x+5) (4x-5)
1. (3x+4) (3x+2)
2. (6x+1)²
3. (4x+5) (4x-5)
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Jawab:
1.3x+4) (3x+2)
= 9x² + 6x + 12x + 8
= 9x² + 18x + 8
2.(6x+1)²
= (6x+1) (6x+1)
= 36x² + 6x + 6x + 1
= 36x² + 12x + 1
3.(4x+5) (4x-5)
= 16x² - 25