3a*ab-2a^2*(-4b)-8*(2a^2b)= eching

$$3 a \cdot a b - 2 a ^ { 2 } \cdot ( - 4 b ) - 8 \cdot ( 2 a ^ { 2 } b ) =$$

Baholash

$$-5ba^{2}$$

Yechim qadamlari

a^{2} hosil qilish uchun a va a ni ko'paytirish.

$$3a^{2}b-2a^{2}\left(-4\right)b-8\times 2a^{2}b$$

-8 hosil qilish uchun 2 va -4 ni ko'paytirish.

$$3a^{2}b-\left(-8a^{2}b\right)-8\times 2a^{2}b$$

-8a^{2}b ning teskarisi 8a^{2}b ga teng.

$$3a^{2}b+8a^{2}b-8\times 2a^{2}b$$

11a^{2}b ni olish uchun 3a^{2}b va 8a^{2}b ni birlashtirish.

$$11a^{2}b-8\times 2a^{2}b$$

16 hosil qilish uchun 8 va 2 ni ko'paytirish.

$$11a^{2}b-16a^{2}b$$

-5a^{2}b ni olish uchun 11a^{2}b va -16a^{2}b ni birlashtirish.

$$-5a^{2}b$$

b ga nisbatan hosilani topish

$$-5a^{2}$$