I'm going to assume you're saying 3x to the power of 2. So first, apply the values of the variables to the equation just as shown:
3(-5)^2 - |-2|
So first, do -5 to the power of 2:
(-5)(-5)=25
Then, multiply 3 to 25:
3*25=75
Now, the absolute value of y is the absolute value of -2. The aboslute value of any number is its positive value, so now we are left with 75-2
75-2=73
73 is your answer.