Whakaoti mō x
x = \frac{\sqrt{7} + 1}{2} \approx 1.822875656
Graph
Tohaina
Kua tāruatia ki te papatopenga
\sqrt{7}-x-x=-1
Tangohia te x mai i ngā taha e rua.
\sqrt{7}-2x=-1
Pahekotia te -x me -x, ka -2x.
-2x=-1-\sqrt{7}
Tangohia te \sqrt{7} mai i ngā taha e rua.
-2x=-\sqrt{7}-1
He hanga arowhānui tō te whārite.
\frac{-2x}{-2}=\frac{-\sqrt{7}-1}{-2}
Whakawehea ngā taha e rua ki te -2.
x=\frac{-\sqrt{7}-1}{-2}
Mā te whakawehe ki te -2 ka wetekia te whakareanga ki te -2.
x=\frac{\sqrt{7}+1}{2}
Whakawehe -1-\sqrt{7} ki te -2.
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