Question

dau coroana va rog ajutați mă​

Answer 1

Răspuns:

a.

$\sqrt{y} = \frac{26}{10}$

Ridici ambii termini la puterea a doua si obtii:

$|y| = ( \frac{26}{10} ) {}^{2}$

$y = \frac{ {26}^{2} }{ {10}^{2} }$

$y = \frac{676}{100}$

$y = 676 \div 100$

$y = 6.76$

b.

$\sqrt{y} = \frac{43}{10}$

Ridici ambii termeni la puterea a doua si obtii:

$|y| = ( \frac{43}{10} ) {}^{2}$

$y = \frac{1849}{100}$

$y = 1849 \div 100$

$y = 18.49$

c.

$\sqrt{y} = 1.(6)$

$\sqrt{y} = \frac{16 - 1}{9}$

$\sqrt{y } = \frac{15}{9}$

Ridici ambii termeni la puterea a doua si obtii:

$|y| = ( \frac{15}{9} ) {}^{2}$

$y = \frac{225}{81}$

$y = \frac{25}{9}$

$y = 2.(7)$

Scuze ca a durat asa mult am vrut sa explic cat mai clar. Succes! :)