Question

Am nevoie de ajutor!​

Answer 1

Răspuns:

x=3×4-5×3+7×5

x=12-15+35

x=32

y=($\sqrt{0,01(7)}$+$\frac{8}{5}$):$\frac{14-1}{90}$-$\sqrt{\frac{25}{4} }$

y=($\sqrt\frac{17-1}{900}$+$\frac{8}{5}$):$\frac{13}{90}$-$\frac{5}{2}$

y=($\sqrt\frac{16}{900}$+$\frac{8}{5}$)×$\frac{90}{13}$-$\frac{5}{2}$

y=($\sqrt\frac{4}{225}$ (simplificare prin 4)+$\frac{8}{5}$)×$\frac{90}{13}$-$\frac{5}{2}$

y=($\frac{2}{15}$+$\frac{8}{5}$)× copiezi cele doua fractii

y=$\frac{26}{15}$×$\frac{90}{13}$-$\frac{5}{2}$

y=simplifici 26 cu 13 prin 13 si 90 cu 15 prin 15-$\frac{5}{2}$

y=2×6-$\frac{5}{2}$

y=12-$\frac{5}{2}$

y=$\frac{19}{2}$

x×y=32×$\frac{19}{2}$=simplifici 32 cu 2

x×y=16×19=304

$\sqrt{x}{y}$=$\sqrt{32x19/2}$ simplifici 32 cu 2

$\sqrt{16}x{19}$=$\sqrt{304}$=4$\sqrt{19}$