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a fost răspuns

b^2xb^4xb^6x....b^20 =

Răspuns :

Danaradu70
b^2*b^4*...*b^20=b^(2+4+....+20)
2+4+...20=2(1+2+...10)=2*10*(10+1):2=110
rezulta ca expresia = b^110

[tex]\it b^2\cdot b^4\cdot b^6\cdot\ ...\ \cdot b^{20} = b^{2+4+6+\ ...\ +20} = b^{2(1+2+3+\ ...\ +10)} = \\\;\\ = b^{2\cdot \frac{10\cdot11}{2}} = b^{110}[/tex]


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