Math Problem Statement

If f(x) = x^2 + 3x - 2, find f(-2).

Solution

To solve this question, we need to evaluate f(2)f(-2) for the function given by:

f(x)=x2+3x2f(x) = x^2 + 3x - 2

Step 1: Substitute x=2x = -2 into the function

Let's replace xx with 2-2 in the expression.

f(2)=(2)2+3(2)2f(-2) = (-2)^2 + 3(-2) - 2

Step 2: Calculate each term

  1. (2)2=4(-2)^2 = 4
  2. 3(2)=63(-2) = -6
  3. 2-2 (the constant term remains as is)

So, we have:

f(2)=462f(-2) = 4 - 6 - 2

Step 3: Simplify

Now, combine the terms:

f(2)=462=4f(-2) = 4 - 6 - 2 = -4

Final Answer

f(2)=4f(-2) = -4

Would you like a detailed breakdown of the steps or have any questions on this solution?


Here are five related questions for further exploration:

  1. What would f(2)f(2) be for the function f(x)=x2+3x2f(x) = x^2 + 3x - 2?
  2. How do you find the zeros of the function f(x)=x2+3x2f(x) = x^2 + 3x - 2?
  3. What is the derivative of f(x)=x2+3x2f(x) = x^2 + 3x - 2 with respect to xx?
  4. How do you determine whether the function f(x)=x2+3x2f(x) = x^2 + 3x - 2 has a maximum or minimum point?
  5. What is the y-intercept of the function f(x)=x2+3x2f(x) = x^2 + 3x - 2?

Tip: When substituting values into an expression, be careful with negative signs, especially when squaring negative numbers.

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Math Problem Analysis

Mathematical Concepts

Algebra
Functions
Substitution

Formulas

f(x) = ax^2 + bx + c

Theorems

Basic substitution in functions

Suitable Grade Level

Grades 8-10