Answer:
X=4.35
Step-by-step explanation:
Let's start solving
3(x-3)^2-162=0
Add 162 to both sides
3(x-3)^2=162
Square root both sides
√3(x-3)=√162
1.73(x-3)=12.727
Open the bracket
1.73x-5.19=12.727
Add 5.19 to both sides
1.73x=7.5327
Divide both sides by 1.73
x=4.35
