Answer:
1. y^12/y^12=1
2. q^15*1/q^15=1
3. (7(123456.789)^4)^0=1
4. 2^2*1/2^5=1/2^3
5 (x^41/y^15)*(y^15/x^41)=1
Explanation:
1. when dividing exponents, subtract the exponents. y^12/y^12=y^(12-12)=y^0=1
2. you do the same as #1
3. Any number to the power of 0 is always 1
4. 1/2^3=1/8
5. since the numerator and denominator is the same, the divide to equal 1
Hope I helped