Whakaoti mō x
x=45
Graph
Tohaina
Kua tāruatia ki te papatopenga
180-4x=0\times 5\times 0\times 4\times 5
Whakareatia te 12 ki te 15, ka 180.
180-4x=0\times 0\times 4\times 5
Whakareatia te 0 ki te 5, ka 0.
180-4x=0\times 4\times 5
Whakareatia te 0 ki te 0, ka 0.
180-4x=0\times 5
Whakareatia te 0 ki te 4, ka 0.
180-4x=0
Whakareatia te 0 ki te 5, ka 0.
-4x=-180
Tangohia te 180 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
x=\frac{-180}{-4}
Whakawehea ngā taha e rua ki te -4.
x=45
Whakawehea te -180 ki te -4, kia riro ko 45.
Ngā Tauira
whārite tapawhā
{ 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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