Evaluate Expression for n=2: We need to evaluate the sum of the series from n=2 to n=5 for the expression (−5x+2n). We will do this by calculating the value of the expression for each value of n and then summing those values.
Evaluate Expression for n=3: First, let's find the value of the expression when n=2: (−5x+2×2)=(−5x+4).
Evaluate Expression for n=4: Next, find the value of the expression when n=3: (−5x+2×3)=(−5x+6).
Evaluate Expression for n=5: Now, find the value of the expression when n=4: (−5x+2×4)=(−5x+8).
Sum Values of Expression: Finally, find the value of the expression when n=5: (−5x+2×5)=(−5x+10).
Combine Like Terms: Now we sum the values of the expression for each n: (−5x+4)+(−5x+6)+(−5x+8)+(−5x+10).
Final Result: Combine like terms: −5x−5x−5x−5x+4+6+8+10=−20x+28.
Final Result: Combine like terms: −5x−5x−5x−5x+4+6+8+10=−20x+28.The sum of the series from n=2 to n=5 of the expression (−5x+2n) is −20x+28.
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