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Question

Find the product:
(3x2 + 5x − 9) × (3x − 5)

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Solution

By horizontal method:
(3x2+5x-9)×(3x-5)=3x(3x2+5x-9)-5(3x2+5x-9)=9x3+15x2-27x-15x2-25x+45=9x3-52x+45

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