Evaluate 3x^2 – 4 when x = 2.
2 answers:
Answer:
C ) 8.
Step-by-step explanation:
Given: 3x^2 – 4 when x = 2.
To find: Evaluate.
Solution: We have given that 3x²– 4
For x =2.
3(2)²– 4.
On solving the power of 2.
3 (4) - 4.
12 - 4 .
On subtracting 4 form 12
8
Therefore, C ) 8.
When x = 2
3x^2 = 3*4 = 12
12-4 = 8
C. is the answer
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