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4(2a + 2) - (2(3a + 1))
= 8a + 8 - 6a - 2
= 2a + 6
= 2(a + 3)
3.a)
8(2x - 3y) = 16x - 24y
3,b)
5(2 - 5x + 10x³ - 3x²)
= 10 - 25x + 50x³ - 15x²
= 50x³ - 15x² - 25x + 10
3.c)
2n³(n² - 2n + 1)
= 2n⁵ - 4n⁴ + 2n³