Issolvi {l}{x=2.5}{y=x^3-6.9x^2+15.87x-12.167}

$$\left\{ \begin{array} { l } { x = 2.5 } \\ { y = x ^ { 3 } - 6.9 x ^ { 2 } + 15.87 x - 12.167 } \end{array} \right.$$

Solvi għal x, y

$$x=2.5$$

$$y=0.008$$

Passi tas-Soluzzjonijiet

Ikkunsidra t-tieni ekwazzjoni. Inserixxi l-valuri magħrufa tal-varjabbli fl-ekwazzjoni.

$$y=2.5^{3}-6.9\times 2.5^{2}+15.87\times 2.5-12.167$$

Ikkalkula 2.5 bil-power ta' 3 u tikseb 15.625.

$$y=15.625-6.9\times 2.5^{2}+15.87\times 2.5-12.167$$

Ikkalkula 2.5 bil-power ta' 2 u tikseb 6.25.

$$y=15.625-6.9\times 6.25+15.87\times 2.5-12.167$$

Immultiplika -6.9 u 6.25 biex tikseb -43.125.

$$y=15.625-43.125+15.87\times 2.5-12.167$$

Naqqas 43.125 minn 15.625 biex tikseb -27.5.

$$y=-27.5+15.87\times 2.5-12.167$$

Immultiplika 15.87 u 2.5 biex tikseb 39.675.

$$y=-27.5+39.675-12.167$$

Żid -27.5 u 39.675 biex tikseb 12.175.

$$y=12.175-12.167$$

Naqqas 12.167 minn 12.175 biex tikseb 0.008.

$$y=0.008$$

Is-sistema issa solvuta.

$$x=2.5 y=0.008$$