Datrys 1/2-y+1/y

$$\frac{ 1 }{ 2-y } + \frac{ 1 }{ y }$$

Enrhifo

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

Camau Ateb Byr

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

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

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

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

Cyfuno termau tebyg yn y-y+2.

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

Ehangu y\left(-y+2\right).

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

Gwahaniaethu w.r.t. y

$$\frac{4\left(1-y\right)}{\left(2-y\right)\left(y-2\right)y^{2}}$$