438^2-(20sqrt{7})^2-sqrt{3}43 eching

$$438 ^ { 2 } - ( 20 \sqrt { 7 } ) ^ { 2 } - \sqrt { 3 } 43$$

Baholash

$$189044-43\sqrt{3}\approx 188969,521815275$$

Yechim qadamlari

2 daraja ko‘rsatkichini 438 ga hisoblang va 191844 ni qiymatni oling.

$$191844-\left(20\sqrt{7}\right)^{2}-43\sqrt{3}$$

\left(20\sqrt{7}\right)^{2} ni kengaytirish.

$$191844-20^{2}\left(\sqrt{7}\right)^{2}-43\sqrt{3}$$

2 daraja ko‘rsatkichini 20 ga hisoblang va 400 ni qiymatni oling.

$$191844-400\left(\sqrt{7}\right)^{2}-43\sqrt{3}$$

\sqrt{7} kvadrati – 7.

$$191844-400\times 7-43\sqrt{3}$$

2800 hosil qilish uchun 400 va 7 ni ko'paytirish.

$$191844-2800-43\sqrt{3}$$

189044 olish uchun 191844 dan 2800 ni ayirish.

$$189044-43\sqrt{3}$$