Whakaoti mō x
x=\frac{3}{8}=0.375
Graph
Tohaina
Kua tāruatia ki te papatopenga
8-4x=4x+5
Whakamahia te āhuatanga tohatoha hei whakarea te 4 ki te 2-x.
8-4x-4x=5
Tangohia te 4x mai i ngā taha e rua.
8-8x=5
Pahekotia te -4x me -4x, ka -8x.
-8x=5-8
Tangohia te 8 mai i ngā taha e rua.
-8x=-3
Tangohia te 8 i te 5, ka -3.
x=\frac{-3}{-8}
Whakawehea ngā taha e rua ki te -8.
x=\frac{3}{8}
Ka taea te hautanga \frac{-3}{-8} te whakamāmā ki te \frac{3}{8} mā te tango tahi i te tohu tōraro i te taurunga me te tauraro.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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