Answer :
Final answer:
To find the value of the expression 17x + 21x³ + 19x² when x=2, substitute 2 for x into the expression. After performing the calculations, the final value is 278.
Explanation:
The given expression is 17x + 21x³ + 19x². Let's find its value by substituting x=2 into this expression.
- First replace x with 2 in the expression. So it becomes 17*2 + 21*(2)³ + 19*(2)².
- Now calculate the expression: 34 + 21*(8) + 19*(4) = 34 + 168 + 76.
- Add up these values and get the final value of the expression is 278.
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