Datrys -1/left(2-yright)^2-1/y^2

$$\frac{ -1 }{ { \left(2-y \right) }^{ 2 } } - \frac{ 1 }{ { y }^{ 2 } }$$

Enrhifo

$$\frac{2\left(-y^{2}+2y-2\right)}{\left(y\left(2-y\right)\right)^{2}}$$

Camau Ateb Byr

I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluosrif lleiaf cyffredin \left(2-y\right)^{2} a y^{2} yw y^{2}\left(-y+2\right)^{2}. Lluoswch \frac{-1}{\left(2-y\right)^{2}} â \frac{y^{2}}{y^{2}}. Lluoswch \frac{1}{y^{2}} â \frac{\left(-y+2\right)^{2}}{\left(-y+2\right)^{2}}.

$$\frac{-y^{2}}{y^{2}\left(-y+2\right)^{2}}-\frac{\left(-y+2\right)^{2}}{y^{2}\left(-y+2\right)^{2}}$$

Gan fod gan \frac{-y^{2}}{y^{2}\left(-y+2\right)^{2}} a \frac{\left(-y+2\right)^{2}}{y^{2}\left(-y+2\right)^{2}} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.

$$\frac{-y^{2}-\left(-y+2\right)^{2}}{y^{2}\left(-y+2\right)^{2}}$$

Gwnewch y gwaith lluosi yn -y^{2}-\left(-y+2\right)^{2}.

$$\frac{-y^{2}-y^{2}+4y-4}{y^{2}\left(-y+2\right)^{2}}$$

Cyfuno termau tebyg yn -y^{2}-y^{2}+4y-4.

$$\frac{-2y^{2}+4y-4}{y^{2}\left(-y+2\right)^{2}}$$

Ehangu y^{2}\left(-y+2\right)^{2}.

$$\frac{-2y^{2}+4y-4}{y^{4}-4y^{3}+4y^{2}}$$

Ehangu

$$-\frac{2\left(y^{2}-2y+2\right)}{\left(y\left(2-y\right)\right)^{2}}$$

Camau Ateb Byr

I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluosrif lleiaf cyffredin \left(2-y\right)^{2} a y^{2} yw y^{2}\left(-y+2\right)^{2}. Lluoswch \frac{-1}{\left(2-y\right)^{2}} â \frac{y^{2}}{y^{2}}. Lluoswch \frac{1}{y^{2}} â \frac{\left(-y+2\right)^{2}}{\left(-y+2\right)^{2}}.

$$\frac{-y^{2}}{y^{2}\left(-y+2\right)^{2}}-\frac{\left(-y+2\right)^{2}}{y^{2}\left(-y+2\right)^{2}}$$

Gan fod gan \frac{-y^{2}}{y^{2}\left(-y+2\right)^{2}} a \frac{\left(-y+2\right)^{2}}{y^{2}\left(-y+2\right)^{2}} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.

$$\frac{-y^{2}-\left(-y+2\right)^{2}}{y^{2}\left(-y+2\right)^{2}}$$

Gwnewch y gwaith lluosi yn -y^{2}-\left(-y+2\right)^{2}.

$$\frac{-y^{2}-y^{2}+4y-4}{y^{2}\left(-y+2\right)^{2}}$$

Cyfuno termau tebyg yn -y^{2}-y^{2}+4y-4.

$$\frac{-2y^{2}+4y-4}{y^{2}\left(-y+2\right)^{2}}$$

Ehangu y^{2}\left(-y+2\right)^{2}.

$$\frac{-2y^{2}+4y-4}{y^{4}-4y^{3}+4y^{2}}$$