Răspuns:
a.
[tex] \sqrt{y} = \frac{26}{10} [/tex]
Ridici ambii termini la puterea a doua si obtii:
[tex] |y| = ( \frac{26}{10} ) {}^{2} [/tex]
[tex]y = \frac{ {26}^{2} }{ {10}^{2} } [/tex]
[tex]y = \frac{676}{100} [/tex]
[tex]y = 676 \div 100[/tex]
[tex]y = 6.76[/tex]
b.
[tex] \sqrt{y} = \frac{43}{10} [/tex]
Ridici ambii termeni la puterea a doua si obtii:
[tex] |y| = ( \frac{43}{10} ) {}^{2} [/tex]
[tex]y = \frac{1849}{100} [/tex]
[tex]y = 1849 \div 100[/tex]
[tex]y = 18.49[/tex]
c.
[tex] \sqrt{y} = 1.(6)[/tex]
[tex] \sqrt{y} = \frac{16 - 1}{9} [/tex]
[tex] \sqrt{y } = \frac{15}{9} [/tex]
Ridici ambii termeni la puterea a doua si obtii:
[tex] |y| = ( \frac{15}{9} ) {}^{2} [/tex]
[tex]y = \frac{225}{81} [/tex]
[tex]y = \frac{25}{9} [/tex]
[tex]y = 2.(7)[/tex]
Scuze ca a durat asa mult am vrut sa explic cat mai clar. Succes! :)
