Respostas
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a) (+5)^7:(+5)².(+5)³=
(+5)^7-2.(+5)³=
(+5)^5.(+5)³=
(+5)^5+3= (+5)^8
b) (-10)^8.(-10)².(-10)=
(-10)^8+2+1= (-10)^11
c) [(-7)²]³= (-7)²+³= (-7)^5
d) (-30)^15:(-30)^10:(-30)^5=
(-30)^15-10-5= (-30)º
e) [(+2)^4]^5:(+2)^10=
(+2)^4+5:(+2)^10=
(+2)^9:(+2)^10=
(+2)^9-10= (+2)^-1
(+5)^7-2.(+5)³=
(+5)^5.(+5)³=
(+5)^5+3= (+5)^8
b) (-10)^8.(-10)².(-10)=
(-10)^8+2+1= (-10)^11
c) [(-7)²]³= (-7)²+³= (-7)^5
d) (-30)^15:(-30)^10:(-30)^5=
(-30)^15-10-5= (-30)º
e) [(+2)^4]^5:(+2)^10=
(+2)^4+5:(+2)^10=
(+2)^9:(+2)^10=
(+2)^9-10= (+2)^-1
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