Выберите, чему равно выражение для всех чисел \( a,\, b,\, x\) и \( y\): \( (4a+5b)^{\: 2}\cdot (5x+19y)^{\: 4}=\,\,?\) \( (4a+5b)\!\cdot\! (5x+19y)\! \cdot\! (5x+19y)\! \cdot\! (5x+19y)\!\cdot\! (5x+19y) \) \( (4a+5b)\!\cdot\! (5x+19y)\! \cdot \!(5x+19y) \!\cdot\! (5x+19y)\!\cdot \!(5x+19y)\! \cdot\! (4a+5b)\) \( (4a+5b)\!\cdot\! (5x+19y) \!\cdot\! (5x+19y)\! \cdot \!(5x+19y)\!\cdot \!(5x+19y) \!\cdot \!(5x+19y)\!\cdot\! (4a+5b)\) \( (4a+5b)\!\cdot \!(4a+5b) \!\cdot (5x+19y)\! \cdot\! (5x+19y)\!\cdot \!(5x+19y) \!\cdot\! (4a+5b)\) \( (4a+5b)\!\cdot \!(5x+19y) \!\cdot\! (5x+19y) \!\cdot\! (5x+19y)\!\cdot\! (5x+19y) \!\cdot \!(4a+5b)\!\cdot\! (4a+5b)\)

Задание

Выберите, чему равно выражение для всех чисел \(\displaystyle a,\, b,\, x\) и \(\displaystyle y\):

\(\displaystyle (4a+5b)^{\: 2}\cdot (5x+19y)^{\: 4}=\,\,?\)

\(\displaystyle \small (4a+5b)\!\cdot\! (5x+19y)\! \cdot\! (5x+19y)\! \cdot\! (5x+19y)\!\cdot\! (5x+19y) \)
\(\displaystyle \small (4a+5b)\!\cdot\! (5x+19y)\! \cdot \!(5x+19y) \!\cdot\! (5x+19y)\!\cdot \!(5x+19y)\! \cdot\! (4a+5b)\)
\(\displaystyle \small (4a+5b)\!\cdot\! (5x+19y) \!\cdot\! (5x+19y)\! \cdot \!(5x+19y)\!\cdot \!(5x+19y) \!\cdot \!(5x+19y)\!\cdot\! (4a+5b)\)
\(\displaystyle \small (4a+5b)\!\cdot \!(4a+5b) \!\cdot (5x+19y)\! \cdot\! (5x+19y)\!\cdot \!(5x+19y) \!\cdot\! (4a+5b)\)
\(\displaystyle \small (4a+5b)\!\cdot \!(5x+19y) \!\cdot\! (5x+19y) \!\cdot\! (5x+19y)\!\cdot\! (5x+19y) \!\cdot \!(4a+5b)\!\cdot\! (4a+5b)\)