Datrys {l}{x=36}{text{Solvefor}ytext{where}}{y=18x^4+12x^3+6x^2}

$$\left. \begin{array} { l } { x = 36 }\\ { \text{Solve for } y \text{ where} } \\ { y = 18 x ^ {4} + 12 x ^ {3} + 6 x ^ {2} } \end{array} \right.$$

Datrys ar gyfer x, y

$$y=30800736$$

Camau Ateb

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

$$y=18\times 36^{4}+12\times 36^{3}+6\times 36^{2}$$

Cyfrifo 36 i bŵer 4 a chael 1679616.

$$y=18\times 1679616+12\times 36^{3}+6\times 36^{2}$$

Lluosi 18 a 1679616 i gael 30233088.

$$y=30233088+12\times 36^{3}+6\times 36^{2}$$

Cyfrifo 36 i bŵer 3 a chael 46656.

$$y=30233088+12\times 46656+6\times 36^{2}$$

Lluosi 12 a 46656 i gael 559872.

$$y=30233088+559872+6\times 36^{2}$$

Adio 30233088 a 559872 i gael 30792960.

$$y=30792960+6\times 36^{2}$$

Cyfrifo 36 i bŵer 2 a chael 1296.

$$y=30792960+6\times 1296$$

Lluosi 6 a 1296 i gael 7776.

$$y=30792960+7776$$

Adio 30792960 a 7776 i gael 30800736.

$$y=30800736$$

Mae’r system wedi’i datrys nawr.

$$x=36 y=30800736$$