Question

ПОМОГИТЕ СРОЧНО! РЕШИТЕ ПЛИЗ!

Answer 1

Ответ:

$\frac{81}{100} - \frac{9}{20} {t}^{9} + \frac{1}{16} {t}^{18}$

Объяснение:

${( \frac{9}{10} )}^{2} - 2 \times \frac{9}{10} \times \frac{1}{4} {t}^{9} + {( \frac{1}{4} {t}^{9}) }^{2} = \frac{81}{100} - 2 \times \frac{9}{10} \times \frac{1}{4} {t}^{9} + {( \frac{1}{4} {t}^{9} )}^{2} = \frac{81}{100} - \frac{9}{20} {t}^{9} + \frac{4}{16} {t}^{18}$