Firstly we are looking for two variables x,y so that we need two formulas .
the second formula is missing
((x+2)(x+2))-((x-5)(1))=A
x^2+4x+4-x+5=A
x^2+3x+9=A
Alright so
5^4m = 5^12
cancel the bases
4m=12
divide by 4
m=3
Step-by-step explanation:

Break up into fractions is the best i can give you