Baholash
\frac{\sqrt{5}}{5}-4\approx -3,552786405
Baham ko'rish
Klipbordga nusxa olish
\frac{1}{\sqrt{5}}-\left(5\times 0+4\right)
5 olish uchun 0 va 5'ni qo'shing.
\frac{\sqrt{5}}{\left(\sqrt{5}\right)^{2}}-\left(5\times 0+4\right)
\frac{1}{\sqrt{5}} maxrajini \sqrt{5} orqali surat va maxrajini koʻpaytirish orqali ratsionallashtiring.
\frac{\sqrt{5}}{5}-\left(5\times 0+4\right)
\sqrt{5} kvadrati – 5.
\frac{\sqrt{5}}{5}-\left(0+4\right)
0 hosil qilish uchun 5 va 0 ni ko'paytirish.
\frac{\sqrt{5}}{5}-4
4 olish uchun 0 va 4'ni qo'shing.
\frac{\sqrt{5}}{5}-\frac{4\times 5}{5}
Ifodalarni qo‘shish yoki ayirish uchun ularni yoyib, maxrajlarini bir xil qiling. 4 ni \frac{5}{5} marotabaga ko'paytirish.
\frac{\sqrt{5}-4\times 5}{5}
\frac{\sqrt{5}}{5} va \frac{4\times 5}{5} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.
\frac{\sqrt{5}-20}{5}
\sqrt{5}-4\times 5 ichidagi ko‘paytirishlarni bajaring.
Misollar
Ikkilik tenglama
{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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Matritsa
\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]
Simli tenglama
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differensatsiya
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Oʻngga
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Chegaralar
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}