\left\{ \begin{array} { l } { x - 2 y = 0 } \\ { y + z = 0 } \\ { 2 x + y - z - 6 = 0 } \end{array} \right.
Whakaoti mō x, y, z
x=2
y=1
z=-1
Tohaina
Kua tāruatia ki te papatopenga
x=2y
Me whakaoti te x-2y=0 mō x.
2\times 2y+y-z-6=0
Whakakapia te 2y mō te x i te whārite 2x+y-z-6=0.
y=-z z=5y-6
Me whakaoti te whārite tuarua mō y me te whārite tuatoru mō z.
z=5\left(-1\right)z-6
Whakakapia te -z mō te y i te whārite z=5y-6.
z=-1
Me whakaoti te z=5\left(-1\right)z-6 mō z.
y=-\left(-1\right)
Whakakapia te -1 mō te z i te whārite y=-z.
y=1
Tātaitia te y i te y=-\left(-1\right).
x=2\times 1
Whakakapia te 1 mō te y i te whārite x=2y.
x=2
Tātaitia te x i te x=2\times 1.
x=2 y=1 z=-1
Kua oti te pūnaha te whakatau.
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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Whakaurunga
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