Aromātai
49-12\sqrt{5}\approx 22.16718427
Whakaroha
49-12\sqrt{5}
Tohaina
Kua tāruatia ki te papatopenga
9\left(\sqrt{5}\right)^{2}-12\sqrt{5}+4
Whakamahia te ture huarua \left(a-b\right)^{2}=a^{2}-2ab+b^{2} hei whakaroha \left(3\sqrt{5}-2\right)^{2}.
9\times 5-12\sqrt{5}+4
Ko te pūrua o \sqrt{5} ko 5.
45-12\sqrt{5}+4
Whakareatia te 9 ki te 5, ka 45.
49-12\sqrt{5}
Tāpirihia te 45 ki te 4, ka 49.
9\left(\sqrt{5}\right)^{2}-12\sqrt{5}+4
Whakamahia te ture huarua \left(a-b\right)^{2}=a^{2}-2ab+b^{2} hei whakaroha \left(3\sqrt{5}-2\right)^{2}.
9\times 5-12\sqrt{5}+4
Ko te pūrua o \sqrt{5} ko 5.
45-12\sqrt{5}+4
Whakareatia te 9 ki te 5, ka 45.
49-12\sqrt{5}
Tāpirihia te 45 ki te 4, ka 49.
Ngā Tauira
whārite tapawhā
{ x } ^ { 2 } - 4 x - 5 = 0
Āhuahanga
4 \sin \theta \cos \theta = 2 \sin \theta
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}