SOLUTION: Multiply (3x+4)(7x^2+5x+2)

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Question 338666: Multiply (3x+4)(7x^2+5x+2)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

%283x%2B4%29%287x%5E2%2B5x%2B2%29 Start with the given expression.


3x%287x%5E2%2B5x%2B2%29%2B4%287x%5E2%2B5x%2B2%29 Expand.


Distribute.


21%2Ax%5E3%2B15%2Ax%5E2%2B6%2Ax%2B28%2Ax%5E2%2B20%2Ax%2B8 Multiply.


21%2Ax%5E3%2B43%2Ax%5E2%2B26%2Ax%2B8 Now combine like terms.


So %283x%2B4%29%287x%5E2%2B5x%2B2%29 expands to 21%2Ax%5E3%2B43%2Ax%5E2%2B26%2Ax%2B8.


In other words, %283x%2B4%29%287x%5E2%2B5x%2B2%29=21%2Ax%5E3%2B43%2Ax%5E2%2B26%2Ax%2B8.


If you need more help, email me at jim_thompson5910@hotmail.com

Also, feel free to check out my tutoring website.

Jim