Question

If $ x = 2 $, what is the value of $ 3x^2 - 5x + 7 $?

• A. \( 9 \)
• B. \( 7 \)
• C. \( 8 \)
• D. \( 10 \)

Hint:

Remember: To evaluate an expression, substitute the value of the variable and simplify step by step.

Answer 1

The Correct Option is A

Step 1: Substitute \( x = 2 \) into the expression
Evaluate the expression \( 3x^2 - 5x + 7 \) at \( x = 2 \).
Substitute \( x = 2 \) into the expression: \[ 3(2)^2 - 5(2) + 7 \] 
Step 2: Simplify the expression
\[ = 3 \times 4 - 5 \times 2 + 7 \] \[ = 12 - 10 + 7 \] \[ = 9 \] 
Answer:
The value of \( 3x^2 - 5x + 7 \) when \( x = 2 \) is \( 9 \). Thus, the correct answer is option (1).