Evaluate 4x2 - 3x when x = 3.

11

27

63

215

Let's evaluate the expression \(4x^2 - 3x\) when \(x = 3\):

1. **Substitute \(x = 3\) into the expression:**
   \[
   4(3)^2 - 3(3)
   \]

2. **Calculate \(3^2\):**
   \[
   3^2 = 9
   \]
   So the expression becomes:
   \[
   4(9) - 3(3)
   \]

3. **Multiply:**
   \[
   4 \times 9 = 36
   \]
   \[
   3 \times 3 = 9
   \]
   Now, the expression is:
   \[
   36 - 9
   \]

4. **Subtract:**
   \[
   36 - 9 = 27
   \]

So, the correct answer is **27**.

Would you like more details or have any questions?

Here are 5 related questions:
1. What is the value of \(5x^2 - 4x\) when \(x = 2\)?
2. How do you solve a quadratic expression for a specific value of \(x\)?
3. What is the value of \(2x^2 + 3x\) when \(x = -1\)?
4. How do you evaluate a polynomial expression?
5. What steps should you follow to substitute a value into an algebraic expression?

**Tip:** Always follow the order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction) when evaluating expressions.

Learn how to evaluate the expression 4x^2 - 3x when x = 3 with a detailed step-by-step solution. This problem covers polynomial evaluation in algebra, focusing on substituting values into polynomial expressions and applying the order of operations (PEMDAS). Suitable for students in Grades 7-9.

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