Aromātai
4-4\sqrt{2}\approx -1.656854249
Whakaroha
4-4\sqrt{2}
Tohaina
Kua tāruatia ki te papatopenga
2\left(\left(\sqrt{2}\right)^{2}-2\sqrt{2}+1\right)-2
Whakamahia te ture huarua \left(a-b\right)^{2}=a^{2}-2ab+b^{2} hei whakaroha \left(\sqrt{2}-1\right)^{2}.
2\left(2-2\sqrt{2}+1\right)-2
Ko te pūrua o \sqrt{2} ko 2.
2\left(3-2\sqrt{2}\right)-2
Tāpirihia te 2 ki te 1, ka 3.
6-4\sqrt{2}-2
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 3-2\sqrt{2}.
4-4\sqrt{2}
Tangohia te 2 i te 6, ka 4.
2\left(\left(\sqrt{2}\right)^{2}-2\sqrt{2}+1\right)-2
Whakamahia te ture huarua \left(a-b\right)^{2}=a^{2}-2ab+b^{2} hei whakaroha \left(\sqrt{2}-1\right)^{2}.
2\left(2-2\sqrt{2}+1\right)-2
Ko te pūrua o \sqrt{2} ko 2.
2\left(3-2\sqrt{2}\right)-2
Tāpirihia te 2 ki te 1, ka 3.
6-4\sqrt{2}-2
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 3-2\sqrt{2}.
4-4\sqrt{2}
Tangohia te 2 i te 6, ka 4.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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