Whakaoti mō x
x=10\left(\sqrt{2}-1\right)\approx 4.142135624
Graph
Tohaina
Kua tāruatia ki te papatopenga
10-\sqrt{2}x-x=0
Tangohia te x mai i ngā taha e rua.
-\sqrt{2}x-x=-10
Tangohia te 10 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
\left(-\sqrt{2}-1\right)x=-10
Pahekotia ngā kīanga tau katoa e whai ana i te x.
\frac{\left(-\sqrt{2}-1\right)x}{-\sqrt{2}-1}=-\frac{10}{-\sqrt{2}-1}
Whakawehea ngā taha e rua ki te -\sqrt{2}-1.
x=-\frac{10}{-\sqrt{2}-1}
Mā te whakawehe ki te -\sqrt{2}-1 ka wetekia te whakareanga ki te -\sqrt{2}-1.
x=10\sqrt{2}-10
Whakawehe -10 ki te -\sqrt{2}-1.
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