Question

СРОЧНО НУЖНА ПОМОЩЬ ПО АЛГЕБРЕ
ОТДАЮ ВСЕ СВОИ БАЛЫ

Answer 1

$1)\frac{z^{2} }{z^{2}-y^{2}}=\frac{z^{2}*11 }{(z^{2}-y^{2})*11}=\frac{11z^{2}}{11(z^{2}-y^{2})} \\\\2)\frac{z-y}{11z+11y}=\frac{(z-y)*(z-y)}{11(z+y)*(z-y)} =\frac{(z-y)^{2}}{11(z^{2}-y^{2})}=\frac{z^{2}-2zy+y^{2}}{11(z^{2}-y^{2})}$