Select the correct answer.
If , what is the value of x?
A. 6
B. 6^2
C. 6^3
D. 6^4

Good evening
Answer:
B. 6²
Step-by-step explanation:
Remark: √(6²) = 6
6² − 12√(6²) + 36 = 36 - 12(6) + 36
= (36 + 36) - 12×6
= 72 - 72
= 0