Jawaban:
1. 7a(5+a) = 35a + a² = a²+35a
2. -6(10x+12) = -60x - 72
3. -2y(y-9) = -2y²+18y
4. y(-2a-5) = -2ay - 5y
5. 12a(a-4) = 12a²-48
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Jawaban:
1. 7a(5+a) = 35a + a² = a²+35a
2. -6(10x+12) = -60x - 72
3. -2y(y-9) = -2y²+18y
4. y(-2a-5) = -2ay - 5y
5. 12a(a-4) = 12a²-48