Whakaoti mō x
x=1
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Tohaina
Kua tāruatia ki te papatopenga
1x+7=\frac{40}{5}
Whakawehea ngā taha e rua ki te 5.
1x+7=8
Whakawehea te 40 ki te 5, kia riro ko 8.
1x=8-7
Tangohia te 7 mai i ngā taha e rua.
1x=1
Tangohia te 7 i te 8, ka 1.
x=1
Whakaraupapatia anō ngā kīanga tau.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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\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]
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Whakarerekētanga
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Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}