Question

допоможіть!!!!! дуже треба терміново​

Answer 1

$\displaystyle\bf\\1)\\\\\Big(x^{\frac{1}{2} }-2y^{\frac{1}{2} }\Big)\Big( x^{\frac{1}{2} } +2y^{\frac{1}{2} } \Big)=\Big(x^{\frac{1}{2} }\Big)^{2} -\Big(2y^{\frac{1}{2} }\Big)^{2} =x-4y\\\\2)\\\\\Big(x^{\frac{1}{2} }-y^{\frac{1}{2} }\Big)\Big(x+(xy)^{\frac{1}{2} } +y\Big)=$

$\displaystyle\bf\\=\Big(x^{\frac{1}{2} }-y^{\frac{1}{2} }\Big)\Big((x^{\frac{1}{2} })^{2} +(xy)^{\frac{1}{2} } +(y^{^{\frac{1}{2} } } )^{2} \Big)=\\\\\\=\Big(x^{\frac{1}{2} }\Big)^{3} -\Big(y^{\frac{1}{2} }\Big)^{3} =x^{\frac{3}{2} }-y^{\frac{3}{2} }$