Explanation:
1) = Solution
(3x+2)(x-1) = 3x^2 - 3x+2x-2
= 3x^2 - x - 2
2) = (x-5)(2x+3)
= 2x^2 + 3x - 10x - 15
= 2x^2 - 7x - 15
3) = (2x+5)(3x-2)
= 6x^2 - 4x + 15x - 10
= 6x^2 + 11x - 10
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