Baholash
20+12i
Ashyoviy qism
20
Baham ko'rish
Klipbordga nusxa olish
2\times 2+2\times \left(-2i\right)+8i\times 2+8\left(-2\right)i^{2}
Binomlarni ko‘paytirgandek 2+8i va 2-2i murakkab sonlarni ko‘paytiring.
2\times 2+2\times \left(-2i\right)+8i\times 2+8\left(-2\right)\left(-1\right)
Ta’rifi bo‘yicha, i^{2} – bu -1.
4-4i+16i+16
Ko‘paytirishlarni bajaring.
4+16+\left(-4+16\right)i
Real va mavhum qismlarni birlashtiring.
20+12i
Qo‘shishlarni bajaring.
Re(2\times 2+2\times \left(-2i\right)+8i\times 2+8\left(-2\right)i^{2})
Binomlarni ko‘paytirgandek 2+8i va 2-2i murakkab sonlarni ko‘paytiring.
Re(2\times 2+2\times \left(-2i\right)+8i\times 2+8\left(-2\right)\left(-1\right))
Ta’rifi bo‘yicha, i^{2} – bu -1.
Re(4-4i+16i+16)
2\times 2+2\times \left(-2i\right)+8i\times 2+8\left(-2\right)\left(-1\right) ichidagi ko‘paytirishlarni bajaring.
Re(4+16+\left(-4+16\right)i)
4-4i+16i+16 ichida real va mavhum qismlarni birlashtiring.
Re(20+12i)
4+16+\left(-4+16\right)i ichida qo‘shishlarni bajaring.
20
20+12i ning real qismi – 20.
Misollar
Ikkilik tenglama
{ x } ^ { 2 } - 4 x - 5 = 0
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Chiziqli tenglama
y = 3x + 4
Arifmetik
699 * 533
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}