Whakaoti mō y
y=\frac{\sqrt{2}-4}{2}\approx -1.292893219
Graph
Tohaina
Kua tāruatia ki te papatopenga
-2y=4-\sqrt{2}
Tangohia te \sqrt{2} mai i ngā taha e rua.
\frac{-2y}{-2}=\frac{4-\sqrt{2}}{-2}
Whakawehea ngā taha e rua ki te -2.
y=\frac{4-\sqrt{2}}{-2}
Mā te whakawehe ki te -2 ka wetekia te whakareanga ki te -2.
y=\frac{\sqrt{2}}{2}-2
Whakawehe 4-\sqrt{2} ki te -2.
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