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efectuati 1.2la puterea a doua+2.1 la puterea adoua-0.0017*1000

Răspuns :

[tex] {(1.2})^{2} + {(2.1)}^{2} - 0.0017 \times 1000[/tex]

[tex] = {( \frac{12}{10} )}^{2} + {( \frac{21}{10} )}^{2} - 1.7[/tex]

[tex] = \frac{ {12}^{2} }{ {10}^{2} } + \frac{ {21}^{2} }{ {10}^{2} } - \frac{17}{10} [/tex]

[tex] = \frac{144}{100} + \frac{441}{100} - \frac{17}{10} [/tex]

[tex] = \frac{144}{100} + \frac{441}{100} - \frac{170}{100} [/tex]

[tex] = \frac{144 + 441 + 170}{100} [/tex]

[tex] = \frac{755}{100} [/tex]

[tex] = \frac{151}{20} [/tex]
1,44+4,41=5,85
0,0017×1000=1,7