What is the product of 2x – 5 and 9 + 4x?
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Answer:
8x² - 2x - 45
Step-by-step explanation:
(2x -5) * (9 + 4x)
2x(9 + 4x) -5(9 + 4x)
18x + 8x² - 45 - 20x
Answer is 8x² - 2x - 45
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