Aromātai
9\left(\sqrt{21}-3\sqrt{5}\right)\approx -19.130654138
Tohaina
Kua tāruatia ki te papatopenga
9\sqrt{3}\sqrt{7}-9\sqrt{3}\sqrt{15}
Whakamahia te āhuatanga tohatoha hei whakarea te 9\sqrt{3} ki te \sqrt{7}-\sqrt{15}.
9\sqrt{21}-9\sqrt{3}\sqrt{15}
Hei whakarea \sqrt{3} me \sqrt{7}, whakareatia ngā tau i raro i te pūtake rua.
9\sqrt{21}-9\sqrt{3}\sqrt{3}\sqrt{5}
Tauwehea te 15=3\times 5. Tuhia anō te pūtake rua o te hua \sqrt{3\times 5} hei hua o ngā pūtake rua \sqrt{3}\sqrt{5}.
9\sqrt{21}-9\times 3\sqrt{5}
Whakareatia te \sqrt{3} ki te \sqrt{3}, ka 3.
9\sqrt{21}-27\sqrt{5}
Whakareatia te -9 ki te 3, ka -27.
Ngā Tauira
whārite tapawhā
{ x } ^ { 2 } - 4 x - 5 = 0
Āhuahanga
4 \sin \theta \cos \theta = 2 \sin \theta
whārite paerangi
y = 3x + 4
Arithmetic
699 * 533
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}