(-4-6i)(-5-7i) eching

$$( - 4 - 6 i ) ( - 5 - 7 i )$$

Baholash

$$-22+58i$$

Yechim qadamlari

Binomlarni ko‘paytirgandek -4-6i va -5-7i murakkab sonlarni ko‘paytiring.

$$-4\left(-5\right)-4\times \left(-7i\right)-6i\left(-5\right)-6\left(-7\right)i^{2}$$

Ta’rifi bo‘yicha, i^{2} – bu -1.

$$-4\left(-5\right)-4\times \left(-7i\right)-6i\left(-5\right)-6\left(-7\right)\left(-1\right)$$

Ko‘paytirishlarni bajaring.

$$20+28i+30i-42$$

Real va mavhum qismlarni birlashtiring.

$$20-42+\left(28+30\right)i$$

Qo‘shishlarni bajaring.

$$-22+58i$$

Ashyoviy qism

$$-22$$

Yechim qadamlari

Binomlarni ko‘paytirgandek -4-6i va -5-7i murakkab sonlarni ko‘paytiring.

$$Re(-4\left(-5\right)-4\times \left(-7i\right)-6i\left(-5\right)-6\left(-7\right)i^{2})$$

Ta’rifi bo‘yicha, i^{2} – bu -1.

$$Re(-4\left(-5\right)-4\times \left(-7i\right)-6i\left(-5\right)-6\left(-7\right)\left(-1\right))$$

-4\left(-5\right)-4\times \left(-7i\right)-6i\left(-5\right)-6\left(-7\right)\left(-1\right) ichidagi ko‘paytirishlarni bajaring.

$$Re(20+28i+30i-42)$$

20+28i+30i-42 ichida real va mavhum qismlarni birlashtiring.

$$Re(20-42+\left(28+30\right)i)$$

20-42+\left(28+30\right)i ichida qo‘shishlarni bajaring.

$$Re(-22+58i)$$

-22+58i ning real qismi – -22.

$$-22$$