5^(-4)*5^2=5^(-2)=1/5^2=1/25
12^(-3)/12^(-4)=12^(-3+4)=12^1=12
a^(-5)^4*a^22=a^(-20)*a^22=a^2
0.4x^6y^(-8)*50x^(-4)y^9=20x^2y
(3a^(-4)/2b^(-3))^(-2)*10a^7b^3=4b^(-6)/9a^(-8)*10a^7b^3=40a^15/b^3
2^(-6)*4^(-3)/8^(-7)=2^(-6)*2^2^(-3)/2^3^(-7)=2^(-6)*2^(-6)/2^(-21)=^2=512
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5^(-4)*5^2=5^(-2)=1/5^2=1/25
12^(-3)/12^(-4)=12^(-3+4)=12^1=12
a^(-5)^4*a^22=a^(-20)*a^22=a^2
0.4x^6y^(-8)*50x^(-4)y^9=20x^2y
(3a^(-4)/2b^(-3))^(-2)*10a^7b^3=4b^(-6)/9a^(-8)*10a^7b^3=40a^15/b^3
2^(-6)*4^(-3)/8^(-7)=2^(-6)*2^2^(-3)/2^3^(-7)=2^(-6)*2^(-6)/2^(-21)=^2=512