The correct answer choice is: C.
How to get answer: You would merely multiply them out to find the trinomial...
(5x + 4)(2x - 5) = 10x^2 - 25x + 8x - 20 =
Answer: 10x^2 - 17x - 20
Use the FOIL method. (first, outside, inside last)
5x * 2x = 10x²
5x * -5 = -25x
4 * 2x = 8x
4 * -5 = -20
Combine like-terms and put the equation together : 10x² - 17x - 20
The answer is C. 10x² - 17x - 20
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