Math Problem Statement

f(-2)=3x²-5x+1

Solution

To evaluate the function f(x)=3x25x+1f(x) = 3x^2 - 5x + 1 at x=2x = -2, substitute 2-2 for xx in the function:

f(2)=3(2)25(2)+1f(-2) = 3(-2)^2 - 5(-2) + 1

Now, calculate step by step:

  1. Calculate (2)2(-2)^2: (2)2=4(-2)^2 = 4

  2. Multiply by 3: 3×4=123 \times 4 = 12

  3. Calculate 5×(2)-5 \times (-2): 5×(2)=10-5 \times (-2) = 10

  4. Add the results together: 12+10+1=2312 + 10 + 1 = 23

Therefore, f(2)=23f(-2) = 23.

If you have any further questions or would like additional details, feel free to ask!

Here are some related questions for further exploration:

  1. What is the value of f(x)f(x) when x=0x = 0?
  2. How do you find the vertex of the quadratic function f(x)=3x25x+1f(x) = 3x^2 - 5x + 1?
  3. How can you determine if this quadratic function opens upwards or downwards?
  4. What are the roots of the function f(x)=3x25x+1f(x) = 3x^2 - 5x + 1?
  5. How would you find the axis of symmetry for the function?
  6. How do you complete the square to rewrite the function in vertex form?
  7. What is the y-intercept of the function f(x)=3x25x+1f(x) = 3x^2 - 5x + 1?
  8. How can you graph the function f(x)=3x25x+1f(x) = 3x^2 - 5x + 1 using key features like intercepts and vertex?

Tip: When evaluating a function, carefully substitute values and perform arithmetic operations step by step to avoid errors.

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Math Problem Analysis

Mathematical Concepts

Quadratic Functions
Function Evaluation
Arithmetic Operations

Formulas

Quadratic function evaluation formula f(x) = ax^2 + bx + c

Theorems

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Suitable Grade Level

Grades 9-12