SOLUTION: I am stuck on correct answer for: (2x - 1)(10x +1)=: I believe the answer is 12x but I want to verify. I am not using a specific book. I am just practicing...

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Question 54167: I am stuck on correct answer for:
(2x - 1)(10x +1)=:
I believe the answer is 12x but I want to verify.
I am not using a specific book. I am just practicing...
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
You need to multiply 2x times everything in the second parenthesis and then multiply -1 time everything in the second parenthesis and then combine like terms. Like terms are terms that have the very same variables to the very same power:
(2x-1)(10x+1)
2x%2810x%29%2B2x%281%29-1%2810x%29-1%281%29
20x%5E2%2B2x-10x-1
20x%5E2%2B%282-10%29x-1
highlight%2820x%5E2-8x-1%29
Happy Calculating!!!