(4xy)*(5xy)= eching

$$( 4 x y ) \cdot ( 5 x y ) =$$

Baholash

$$20\left(xy\right)^{2}$$

Ko'paytirishning kommutativ xususiyatdan foydalanish qadamlari

Ifodani qisqartirish uchun eksponent qoidalaridan foydalanish.

$$4^{1}x^{1}y^{1}\times 5^{1}x^{1}y^{1}$$

Ko'paytirishning kommutativ xususiyatidan foydalanish.

$$4^{1}\times 5^{1}x^{1}x^{1}y^{1}y^{1}$$

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

$$4^{1}\times 5^{1}x^{1+1}y^{1+1}$$

1 va 1 belgilarini qo'shish.

$$4^{1}\times 5^{1}x^{2}y^{1+1}$$

1 va 1 belgilarini qo'shish.

$$4^{1}\times 5^{1}x^{2}y^{2}$$

4 ni 5 marotabaga ko'paytirish.

$$20x^{2}y^{2}$$

x ga nisbatan hosilani topish

$$40xy^{2}$$