Whakaoti mō x
x=\frac{1}{2}=0.5
Graph
Tohaina
Kua tāruatia ki te papatopenga
3x\times 2x+xx=2x\times 4-2\times 2+x\times 7x
Tē taea kia ōrite te tāupe x ki 0 nā te kore tautuhi i te whakawehenga mā te kore. Me whakarea ngā taha e rua o te whārite ki te 2x, arā, te tauraro pātahi he tino iti rawa te kitea o 2,x.
3x\times 2x+x^{2}=2x\times 4-2\times 2+x\times 7x
Whakareatia te x ki te x, ka x^{2}.
6xx+x^{2}=2x\times 4-2\times 2+x\times 7x
Whakareatia te 3 ki te 2, ka 6.
6x^{2}+x^{2}=2x\times 4-2\times 2+x\times 7x
Whakareatia te x ki te x, ka x^{2}.
7x^{2}=2x\times 4-2\times 2+x\times 7x
Pahekotia te 6x^{2} me x^{2}, ka 7x^{2}.
7x^{2}=2x\times 4-2\times 2+x^{2}\times 7
Whakareatia te x ki te x, ka x^{2}.
7x^{2}=8x-2\times 2+x^{2}\times 7
Whakareatia te 2 ki te 4, ka 8.
7x^{2}=8x-4+x^{2}\times 7
Whakareatia te -2 ki te 2, ka -4.
7x^{2}-8x=-4+x^{2}\times 7
Tangohia te 8x mai i ngā taha e rua.
7x^{2}-8x-x^{2}\times 7=-4
Tangohia te x^{2}\times 7 mai i ngā taha e rua.
-8x=-4
Pahekotia te 7x^{2} me -x^{2}\times 7, ka 0.
x=\frac{-4}{-8}
Whakawehea ngā taha e rua ki te -8.
x=\frac{1}{2}
Whakahekea te hautanga \frac{-4}{-8} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te -4.
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