(-5x^4y^2)(4x^5y^4) eching

$$( - 5 x ^ { 4 } y ^ { 2 } ) ( 4 x ^ { 5 } y ^ { 4 } )$$

Baholash

$$-20y^{6}x^{9}$$

Ko'paytirishning kommutativ xususiyatdan foydalanish qadamlari

Ifodani qisqartirish uchun eksponent qoidalaridan foydalanish.

$$\left(-5\right)^{1}x^{4}y^{2}\times 4^{1}x^{5}y^{4}$$

Ko'paytirishning kommutativ xususiyatidan foydalanish.

$$\left(-5\right)^{1}\times 4^{1}x^{4}x^{5}y^{2}y^{4}$$

Ayni daraja ko'rsatkichlarini ko'paytirish uchun ularning darajalarini qo'shing.

$$\left(-5\right)^{1}\times 4^{1}x^{4+5}y^{2+4}$$

4 va 5 belgilarini qo'shish.

$$\left(-5\right)^{1}\times 4^{1}x^{9}y^{2+4}$$

2 va 4 belgilarini qo'shish.

$$\left(-5\right)^{1}\times 4^{1}x^{9}y^{6}$$

-5 ni 4 marotabaga ko'paytirish.

$$-20x^{9}y^{6}$$

x ga nisbatan hosilani topish

$$-180y^{6}x^{8}$$