SOLUTION: multiply and simplify (2xs+3)(5x2-6x-3) second part is 5x squared

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Question 158240: multiply and simplify (2xs+3)(5x2-6x-3) second part is 5x squared
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Is the expression %282x%5E2%2B3%29%285x%5E2-6x-3%29 ??


%282x%5E2%2B3%29%285x%5E2-6x-3%29 Start with the given expression.


2x%5E2%285x%5E2-6x-3%29%2B3%285x%5E2-6x-3%29 Expand. Remember %28a%2Bb%29%28c%2Bd%2Be%29=a%28c%2Bd%2Be%29%2Bb%28c%2Bd%2Be%29


Distribute.


10%2Ax%5E4-12%2Ax%5E3-6%2Ax%5E2%2B15%2Ax%5E2-18%2Ax-9 Multiply.


10%2Ax%5E4-12%2Ax%5E3%2B9%2Ax%5E2-18%2Ax-9 Now combine like terms.


So %282x%5E2%2B3%29%285x%5E2-6x-3%29 expands to 10%2Ax%5E4-12%2Ax%5E3%2B9%2Ax%5E2-18%2Ax-9.


In other words, %282x%5E2%2B3%29%285x%5E2-6x-3%29=10%2Ax%5E4-12%2Ax%5E3%2B9%2Ax%5E2-18%2Ax-9.