Question

ПОМОГИТЕ ПОЖАЛУЙСТА

Answer 1

$t^{2}+5z+9z^{2} =\frac{25}{36}+5z+9z^{2}=(\frac{5}{6})^{2} +2*\frac{5}{6}*3z+(3z)^{2}=(\frac{5}{6}+3z)^{2}\\\\t^{2}=\frac{25}{36}$