If x = 4, what is the value of 2x² + 3?

If x = 4, what is the value of 2x² + 3?

• A. A) 35
• B. B) 30
• C. C) 27
• D. D) 25

Answer: (A)

To find the value of the expression \(2x² + 3\) when \(x = 4\), first substitute the value of \(x\) into the expression. Calculate \(x²\): \[ x² = 4² = 16 \] Next, multiply this value by 2: \[ 2x² = 2 \times 16 = 32 \] Finally, add 3 to this product: \[ 2x² + 3 = 32 + 3 = 35 \] Therefore, the value of the expression when \(x = 4\) is 35. This aligns with the correct answer choice, indicating that the computation and substitution were properly executed, leading to the conclusion based on basic arithmetic operations applied to the expression.

To find the value of the expression (2x² + 3) when (x = 4), first substitute the value of (x) into the expression.

Calculate (x²):

[

x² = 4² = 16

]

Next, multiply this value by 2:

[

2x² = 2 \times 16 = 32

]

Finally, add 3 to this product:

[

2x² + 3 = 32 + 3 = 35

]

Therefore, the value of the expression when (x = 4) is 35. This aligns with the correct answer choice, indicating that the computation and substitution were properly executed, leading to the conclusion based on basic arithmetic operations applied to the expression.