Given:
[tex]\sqrt[]{I}+3=12[/tex]
To find:
We need to find the solution to the equation.
Explanation:
Subtract 3 from both sides of the equation.
[tex]\sqrt[]{I}+3-3=12-3[/tex]
[tex]\sqrt[]{I}=9[/tex]
Taking exponent to power 2.
[tex](\sqrt[]{I})2=9^2[/tex]
[tex]I=81[/tex]
Final answer:
The solution is 81.
