Question

repede ex 25 tot pana la 12 noapte trb sa l predau​

Answer 1

Răspuns:

eu iti recomand sa folosești aplicația photomath,dacă scanezi exercițiile ti le poate rezolva însă ai grija sa tine bine telefonul atunci când scanezi fiindcă uneori iti poate lua greșit probelma

Answer 2

Bună! Răspunsul este mai jos.

$a. \: 7 \sqrt{20} \times ( \sqrt{1125} - \sqrt{2205} ) + 6 \sqrt{192}( \sqrt{1083} - \sqrt{300})$

$7 \sqrt{20} (15 \sqrt{5} - 21 \sqrt{5} ) + 6 \times 8 \sqrt{3} (19 \sqrt{3} - 10 \sqrt{3} )$

$7 \sqrt{20} \times ( - 6 \sqrt{5} ) + 6 \times 8 \sqrt{3} \times 9 \sqrt{3}$

$- 7 \times 2 \times 5 \times 6 + 6 \times 8 \times 3 \times 9$

$6( - 7 \times 2 \times 5 + 8 \times 3 \times 9)$

$6( - 70 + 216)$

$6 \times 146$

$876$

$b. \: 4 \sqrt{12} \times ( \sqrt{2028} - \sqrt{2700} ) - 3 \sqrt{8} ( \sqrt{968} - \sqrt{338} )$

$4 \sqrt{12} (26 \sqrt{3} - 30 \sqrt{3} ) - 3 \times 2 \sqrt{2} (22 \sqrt{2} - 13 \sqrt{2} )$

$4 \sqrt{12} \times ( - 4 \sqrt{3}) - 3 \times 2 \sqrt{2} \times 9 \sqrt{2}$

$- 4 \times 2 \sqrt{3} \times 4 \sqrt{3} - 3 \times 2 \times 2 \times 9$

$- 4 \times 2 \times 3 \times 4 - 3 \times 2 \times 2 \times 9$

$2 \times 3( - 4 \times 4 - 2 \times 9)$

$2 \times 3( - 16 - 18)$

$2 \times 3 \times ( - 34)$

$204$

$c. \: 4 \sqrt{12} \times (3 \sqrt{75} - 7 \sqrt{27} + 2 \sqrt{507} - 8 \sqrt{1200} )$

$4 \sqrt{12} (15 \sqrt{3} - 21 \sqrt{3} + 26 \sqrt{3} - 160 \sqrt{3} )$

$4 \sqrt{12} \times ( - 140 \sqrt{3} )$

$- 4 \times 2 \sqrt{3} \times 140 \sqrt{3}$

$- 4 \times 2 \times 3 \times 140$

$- 3360$

$d. \: \sqrt{216} \times ( \sqrt{32} - \sqrt{98} + \sqrt{200} - \sqrt{18} ) - \sqrt{21} \times ( \sqrt{175} - \sqrt{63} + \sqrt{28} )$

$6 \sqrt{6} (4 \sqrt{2} - 7\sqrt{2} + 10 \sqrt{2} - 3 \sqrt{2} ) - \sqrt{21}(5 \sqrt{7} - 3 \sqrt{7} + 2 \sqrt{7} )$

$6 \sqrt{6} \times 4 \sqrt{2} - \sqrt{21} \times 4 \sqrt{7}$

$24 \sqrt{12} - 4 \sqrt{147}$

$48 \sqrt{3} - 28 \sqrt{3}$

$20 \sqrt{3}$

$e. \: \sqrt{320} \times ( \sqrt{980} - \sqrt{720} + \sqrt{80} - \sqrt{405} ) + \sqrt{294} \times ( \sqrt{150} - \sqrt{486} + \sqrt{384} - \sqrt{96} )$

$\sqrt{320} (14 \sqrt{5} - 12 \sqrt{5} + 4 \sqrt{5} - 9 \sqrt{5} ) + \sqrt{294} (5 \sqrt{6} - 9 \sqrt{6} + 8 \sqrt{6} - 4 \sqrt{6} )$

$\sqrt{320} \times ( - 3 \sqrt{5} ) + \sqrt{264} \times 0$

$- 8 \sqrt{5} \times 3 \sqrt{5} + 0$

$- 8 \times 5 \times 3$

$- 120$