Datrys {l}{1=6x}{text{Solvefor}ytext{where}}{y=x^2-5x}

$$\left. \begin{array} { l } { 1 = 6 x }\\ { \text{Solve for } y \text{ where} } \\ { y = x ^ {2} - 5 x } \end{array} \right.$$

Datrys ar gyfer x, y

$$y=-\frac{29}{36}\approx -0.805555556$$

Camau Ateb

Ystyriwch yr hafaliad cyntaf. Rhannu’r ddwy ochr â 6.

$$\frac{1}{6}=x$$

Cyfnewidiwch yr ochrau fel bod yr holl dermau newidiol ar yr ochr chwith.

$$x=\frac{1}{6}$$

Ystyriwch yr ail hafaliad. Mewnosod y gwerthoedd sy’n hysbys i’r hafaliad.

$$y=\left(\frac{1}{6}\right)^{2}-5\times \frac{1}{6}$$

Cyfrifo \frac{1}{6} i bŵer 2 a chael \frac{1}{36}.

$$y=\frac{1}{36}-5\times \frac{1}{6}$$

Lluosi -5 a \frac{1}{6} i gael -\frac{5}{6}.

$$y=\frac{1}{36}-\frac{5}{6}$$

Tynnu \frac{5}{6} o \frac{1}{36} i gael -\frac{29}{36}.

$$y=-\frac{29}{36}$$

Mae’r system wedi’i datrys nawr.

$$x=\frac{1}{6} y=-\frac{29}{36}$$