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b. ( 2x + 5) - (x-3) = x + 8
3. a. -2a (a + 4b ) = -2a^2 -8ab
b. -3 ( a- 2b ) = -3a + 6b
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3. a. -2a(a+4b) = -2a^2 - 8ab
b. -3(a-2b) = -3a + 6b