Whakaoti mō x
x=\frac{4}{9}\approx 0.444444444
Graph
Tohaina
Kua tāruatia ki te papatopenga
4-\left(x+2\right)-2\left(x+3\right)+12x=0
Me whakarea ngā taha e rua o te whārite ki te 4, arā, te tauraro pātahi he tino iti rawa te kitea o 4,2.
4-x-2-2\left(x+3\right)+12x=0
Hei kimi i te tauaro o x+2, kimihia te tauaro o ia taurangi.
2-x-2\left(x+3\right)+12x=0
Tangohia te 2 i te 4, ka 2.
2-x-2x-6+12x=0
Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te x+3.
2-3x-6+12x=0
Pahekotia te -x me -2x, ka -3x.
-4-3x+12x=0
Tangohia te 6 i te 2, ka -4.
-4+9x=0
Pahekotia te -3x me 12x, ka 9x.
9x=4
Me tāpiri te 4 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
x=\frac{4}{9}
Whakawehea ngā taha e rua ki te 9.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
Āhuahanga
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whārite paerangi
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Poukapa
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
whārite Simultaneous
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Whakarerekētanga
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Whakaurunga
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Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}