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b) x=2 la puterea 11- 2 la puterea 10
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Răspuns :

[tex] \bf x ={2}^{11} - {2}^{10} [/tex]

[tex]\bf x ={2}^{10} \cdot\big( {2}^{11 - 10} - {2}^{10 - 10} \big)[/tex]

[tex]\bf x ={2}^{10} \cdot\big( {2}^{1} - {2}^{0} \big)[/tex]

[tex]\bf x ={2}^{10} \cdot\big( {2}-1 \big)[/tex]

[tex]\bf x ={2}^{10} \cdot1[/tex]

[tex] \red{ \boxed{\bf x ={2}^{10}}}[/tex]

[tex]\it x=2^{11}-2^{10}=2^{10}(2-1)=2^{10}[/tex]