ex 24 vaaaa rog ca nu stiu dau coroana
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a) 2^3×4^3=2^3×(2^2)^3=2^3×2^6=2^9
b)2^7×16=2^7×2^4=2^11
c)2^15×4^12×8^6= 2^15×*2^2)^12×(2^3)^6=2^15 × 2^24 ×2^18=2^(15+24+18)=2^47
d)9^2×27^3×3^7=(3^2)^2 × (3^3)^3 ×3^7=3^4×3^9×3^7=3^20
e) 4^22:2^40=(2^2)^22:2^40=2^44:2^40=2^4
f) 3^6×4^6×12^4=3^6 ×4^6 ×(3×4)^4=3^6 ×4^6×3^4 ×4^4=3^10 ×4^10=(3×4)^10=12^10
g) (5^10×25^2)^3:5^40=(5^10×5^4)^3:5^40= =(5^14)^3:5^40=5^42:5^40=5^2
h) 125^6:25^4×(5^3)^11= (5^3)^6 :(5^2)^4 ×(5^3)^11=5^18 :5^8 ×5^33=5^10×5^11=5^21
b)2^7×16=2^7×2^4=2^11
c)2^15×4^12×8^6= 2^15×*2^2)^12×(2^3)^6=2^15 × 2^24 ×2^18=2^(15+24+18)=2^47
d)9^2×27^3×3^7=(3^2)^2 × (3^3)^3 ×3^7=3^4×3^9×3^7=3^20
e) 4^22:2^40=(2^2)^22:2^40=2^44:2^40=2^4
f) 3^6×4^6×12^4=3^6 ×4^6 ×(3×4)^4=3^6 ×4^6×3^4 ×4^4=3^10 ×4^10=(3×4)^10=12^10
g) (5^10×25^2)^3:5^40=(5^10×5^4)^3:5^40= =(5^14)^3:5^40=5^42:5^40=5^2
h) 125^6:25^4×(5^3)^11= (5^3)^6 :(5^2)^4 ×(5^3)^11=5^18 :5^8 ×5^33=5^10×5^11=5^21
lidim:
si coroana? sau nu intelegi? 2^5= doi la puterea a cincea. esti ok?
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