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If x = 3, what is the value of 2x^2 - 5x + 1? (2022)

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Question: If x = 3, what is the value of 2x^2 - 5x + 1? (2022)

Options:

  1. -2
  2. 0
  3. 4
  4. 6

Correct Answer: 6

Solution: 

2(3^2) - 5(3) + 1 = 18 - 15 + 1 = 4.

If x = 3, what is the value of 2x^2 - 5x + 1? (2022)

Practice Questions

Q1
If x = 3, what is the value of 2x^2 - 5x + 1? (2022)
  1. -2
  2. 0
  3. 4
  4. 6

Questions & Step-by-Step Solutions

If x = 3, what is the value of 2x^2 - 5x + 1? (2022)
  • Step 1: Start with the expression 2x^2 - 5x + 1.
  • Step 2: Substitute x with 3 in the expression. This gives us 2(3^2) - 5(3) + 1.
  • Step 3: Calculate 3^2, which is 9.
  • Step 4: Now replace 3^2 with 9 in the expression: 2(9) - 5(3) + 1.
  • Step 5: Multiply 2 by 9 to get 18. So now we have 18 - 5(3) + 1.
  • Step 6: Calculate 5(3), which is 15.
  • Step 7: Replace 5(3) with 15 in the expression: 18 - 15 + 1.
  • Step 8: Now perform the subtraction: 18 - 15 equals 3.
  • Step 9: Finally, add 1 to 3 to get the final result: 3 + 1 equals 4.
  • Algebraic Expression Evaluation – The question tests the ability to evaluate a quadratic expression by substituting a given value for the variable.
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