Whakaoti mō x
x=-10
Graph
Tohaina
Kua tāruatia ki te papatopenga
15x+5-7=21x-4-7x-8
Pahekotia te 13x me 2x, ka 15x.
15x-2=21x-4-7x-8
Tangohia te 7 i te 5, ka -2.
15x-2=14x-4-8
Pahekotia te 21x me -7x, ka 14x.
15x-2=14x-12
Tangohia te 8 i te -4, ka -12.
15x-2-14x=-12
Tangohia te 14x mai i ngā taha e rua.
x-2=-12
Pahekotia te 15x me -14x, ka x.
x=-12+2
Me tāpiri te 2 ki ngā taha e rua.
x=-10
Tāpirihia te -12 ki te 2, ka -10.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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Arithmetic
699 * 533
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
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Whakaurunga
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}