Aromātai
9-2\sqrt{14}\approx 1.516685226
Whakaroha
9-2\sqrt{14}
Tohaina
Kua tāruatia ki te papatopenga
\left(\sqrt{7}\right)^{2}-2\sqrt{7}\sqrt{2}+\left(\sqrt{2}\right)^{2}
Whakamahia te ture huarua \left(a-b\right)^{2}=a^{2}-2ab+b^{2} hei whakaroha \left(\sqrt{7}-\sqrt{2}\right)^{2}.
7-2\sqrt{7}\sqrt{2}+\left(\sqrt{2}\right)^{2}
Ko te pūrua o \sqrt{7} ko 7.
7-2\sqrt{14}+\left(\sqrt{2}\right)^{2}
Hei whakarea \sqrt{7} me \sqrt{2}, whakareatia ngā tau i raro i te pūtake rua.
7-2\sqrt{14}+2
Ko te pūrua o \sqrt{2} ko 2.
9-2\sqrt{14}
Tāpirihia te 7 ki te 2, ka 9.
\left(\sqrt{7}\right)^{2}-2\sqrt{7}\sqrt{2}+\left(\sqrt{2}\right)^{2}
Whakamahia te ture huarua \left(a-b\right)^{2}=a^{2}-2ab+b^{2} hei whakaroha \left(\sqrt{7}-\sqrt{2}\right)^{2}.
7-2\sqrt{7}\sqrt{2}+\left(\sqrt{2}\right)^{2}
Ko te pūrua o \sqrt{7} ko 7.
7-2\sqrt{14}+\left(\sqrt{2}\right)^{2}
Hei whakarea \sqrt{7} me \sqrt{2}, whakareatia ngā tau i raro i te pūtake rua.
7-2\sqrt{14}+2
Ko te pūrua o \sqrt{2} ko 2.
9-2\sqrt{14}
Tāpirihia te 7 ki te 2, ka 9.
Ngā Tauira
whārite tapawhā
{ x } ^ { 2 } - 4 x - 5 = 0
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whārite paerangi
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Arithmetic
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Poukapa
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
whārite Simultaneous
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Whakarerekētanga
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Whakaurunga
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}