Question 3 • Common Core Algebra I B-IC
Multiply each term in the first binomial by each term in the second: (5t)(4t) = 20t², (5t)(5) = 25t, (−4)(4t) = −16t, and (−4)(5) = −20. Combine the like terms, 25t − 16t = 9t, giving 20t² + 9t − 20. The correct choice is A, 20t² + 9t − 20.
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