Найдите значение выражения (4/15)² - 13/36.

\(\left\)\(\frac{4}{15}\right\)^2 - \(\frac{13}{36}\) = \(\frac{16}{225}\) - \(\frac{13}{36}\) = \(\frac{16 \cdot 4 - 13 \cdot 25}{900}\) = \(\frac{64 - 325}{900}\) = \(\frac{-261}{900}\) = -0.29.