Jawaban:
6. \( (3+2)(5-22) \) = \((5)(-17) = -85\)
7. \( (9 x-2)(8 x+5) \) = \( 72x^2 + 45x - 16x - 10 = 72x^2 + 29x - 10\)
8. \( (-22+5)(-32-7) \) = \((-17)(-39) = 663\)
9. \( 9(20 x-6)(x+7) \) = \( 180x^2 + 1233x - 378 \)
10. \( (x-72)(4-2) \) = \( (x-72)(2) = 2x-144 \)
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Jawaban:
6. \( (3+2)(5-22) \) = \((5)(-17) = -85\)
7. \( (9 x-2)(8 x+5) \) = \( 72x^2 + 45x - 16x - 10 = 72x^2 + 29x - 10\)
8. \( (-22+5)(-32-7) \) = \((-17)(-39) = 663\)
9. \( 9(20 x-6)(x+7) \) = \( 180x^2 + 1233x - 378 \)
10. \( (x-72)(4-2) \) = \( (x-72)(2) = 2x-144 \)