3a^2-7b^2-9a^3+21ab^2 eching

$$3 a ^ { 2 } - 7 b ^ { 2 } - 9 a ^ { 3 } + 21 a b ^ { 2 }$$

Omil

$$\left(1-3a\right)\left(3a^{2}-7b^{2}\right)$$

Yechim qadamlari

3a^{2}-7b^{2}-9a^{3}+21ab^{2}=\left(3a^{2}-7b^{2}\right)+\left(-9a^{3}+21ab^{2}\right) misolini guruhlang hamda -9a^{3}+21ab^{2} ichidagi -3a ni ajrating.

$$3a^{2}-7b^{2}-3a\left(3a^{2}-7b^{2}\right)$$

Distributiv funktsiyasidan foydalangan holda 3a^{2}-7b^{2} umumiy terminini chiqaring.

$$\left(3a^{2}-7b^{2}\right)\left(1-3a\right)$$

Baholash

$$\left(1-3a\right)\left(3a^{2}-7b^{2}\right)$$