Question

Proszę rozpisane jak najbardziej się da[tex](\frac{2}{3} )^{2} + \frac{2}{3} ^{2} -\frac{2}{3} _{2}[/tex]

Answer 1

Odpowiedź:

(2/3)^2 + (2/3)^2 - 2/3^2=

=(2/3)^2 + (2/3)^2 - 2/9=

=(2/3)^2 + (2/3)^2 - 2/9=

=2^2/3^2 + (2/3)^2 - 2/9=

=4/3^2 + (2/3)^2 - 2/9=

=4/9 + (2/3)^2 - 2/9=

=4/9 + 2^2/3^2 - 2/9=

=4/9 + 4/3^2 - 2/9=

=4/9 + 4/9 - 2/9=

=(4 + 4 - 2)/9=

=(8 - 2)/9=

=6/9=

=2/3