Whakaoti mō x
x=-21
Graph
Tohaina
Kua tāruatia ki te papatopenga
21=0-x
Whakareatia te 0 ki te 8, ka 0.
21=-x
Ko te tau i tāpiria he kore ka hua koia tonu.
-x=21
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
x=-21
Me whakarea ngā taha e rua ki te -1.
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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