3(frac{7+2sqrt{10}}{3})^2+4*(frac{7+2sqrt{10}}{3})*(frac{7-2sqrt{10}}{3})-3*(frac{7-2sqrt{10}}{3})^2 eching

$$3 ( \frac { 7 + 2 \sqrt { 10 } } { 3 } ) ^ { 2 } + 4 \times ( \frac { 7 + 2 \sqrt { 10 } } { 3 } ) \times ( \frac { 7 - 2 \sqrt { 10 } } { 3 } ) - 3 \times ( \frac { 7 - 2 \sqrt { 10 } } { 3 } ) ^ { 2 }$$

Baholash

$$\frac{56\sqrt{10}}{3}+4\approx 63,02918299$$

Qisqa yechim qadamlari

\frac{7+2\sqrt{10}}{3}ni darajaga oshirish uchun, surat va maxrajni darajaga oshirib, keyin bo‘ling.

$$3\times \frac{\left(7+2\sqrt{10}\right)^{2}}{3^{2}}+4\times \frac{7+2\sqrt{10}}{3}\times \frac{7-2\sqrt{10}}{3}-3\times \left(\frac{7-2\sqrt{10}}{3}\right)^{2}$$

3\times \frac{\left(7+2\sqrt{10}\right)^{2}}{3^{2}} ni yagona kasrga aylantiring.

$$\frac{3\left(7+2\sqrt{10}\right)^{2}}{3^{2}}+4\times \frac{7+2\sqrt{10}}{3}\times \frac{7-2\sqrt{10}}{3}-3\times \left(\frac{7-2\sqrt{10}}{3}\right)^{2}$$

Surat va maxrajdagi ikkala 3 ni qisqartiring.

$$\frac{\left(2\sqrt{10}+7\right)^{2}}{3}+4\times \frac{7+2\sqrt{10}}{3}\times \frac{7-2\sqrt{10}}{3}-3\times \left(\frac{7-2\sqrt{10}}{3}\right)^{2}$$

4\times \frac{7+2\sqrt{10}}{3} ni yagona kasrga aylantiring.

$$\frac{\left(2\sqrt{10}+7\right)^{2}}{3}+\frac{4\left(7+2\sqrt{10}\right)}{3}\times \frac{7-2\sqrt{10}}{3}-3\times \left(\frac{7-2\sqrt{10}}{3}\right)^{2}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{4\left(7+2\sqrt{10}\right)}{3} ni \frac{7-2\sqrt{10}}{3} ga ko‘paytiring.

$$\frac{\left(2\sqrt{10}+7\right)^{2}}{3}+\frac{4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3}-3\times \left(\frac{7-2\sqrt{10}}{3}\right)^{2}$$

Ifodalarni qo‘shish yoki ayirish uchun ularni yoyib, maxrajlarini bir xil qiling. 3 va 3\times 3 ning eng kichik umumiy karralisi 3\times 3. \frac{\left(2\sqrt{10}+7\right)^{2}}{3} ni \frac{3}{3} marotabaga ko'paytirish.

$$\frac{3\left(2\sqrt{10}+7\right)^{2}}{3\times 3}+\frac{4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3}-3\times \left(\frac{7-2\sqrt{10}}{3}\right)^{2}$$

\frac{3\left(2\sqrt{10}+7\right)^{2}}{3\times 3} va \frac{4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{3\left(2\sqrt{10}+7\right)^{2}+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3}-3\times \left(\frac{7-2\sqrt{10}}{3}\right)^{2}$$

\frac{7-2\sqrt{10}}{3}ni darajaga oshirish uchun, surat va maxrajni darajaga oshirib, keyin bo‘ling.

$$\frac{3\left(2\sqrt{10}+7\right)^{2}+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3}-3\times \frac{\left(7-2\sqrt{10}\right)^{2}}{3^{2}}$$

3\times \frac{\left(7-2\sqrt{10}\right)^{2}}{3^{2}} ni yagona kasrga aylantiring.

$$\frac{3\left(2\sqrt{10}+7\right)^{2}+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3}-\frac{3\left(7-2\sqrt{10}\right)^{2}}{3^{2}}$$

Surat va maxrajdagi ikkala 3 ni qisqartiring.

$$\frac{3\left(2\sqrt{10}+7\right)^{2}+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3}-\frac{\left(-2\sqrt{10}+7\right)^{2}}{3}$$

\left(a+b\right)^{2}=a^{2}+2ab+b^{2} binom teoremasini \left(-2\sqrt{10}+7\right)^{2} kengaytirilishi uchun ishlating.

$$\frac{3\left(2\sqrt{10}+7\right)^{2}+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3}-\frac{4\left(\sqrt{10}\right)^{2}-28\sqrt{10}+49}{3}$$

\sqrt{10} kvadrati – 10.

$$\frac{3\left(2\sqrt{10}+7\right)^{2}+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3}-\frac{4\times 10-28\sqrt{10}+49}{3}$$

40 hosil qilish uchun 4 va 10 ni ko'paytirish.

$$\frac{3\left(2\sqrt{10}+7\right)^{2}+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3}-\frac{40-28\sqrt{10}+49}{3}$$

89 olish uchun 40 va 49'ni qo'shing.

$$\frac{3\left(2\sqrt{10}+7\right)^{2}+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3}-\frac{89-28\sqrt{10}}{3}$$

Ifodalarni qo‘shish yoki ayirish uchun ularni yoyib, maxrajlarini bir xil qiling. 3\times 3 va 3 ning eng kichik umumiy karralisi 3\times 3. \frac{89-28\sqrt{10}}{3} ni \frac{3}{3} marotabaga ko'paytirish.

$$\frac{3\left(2\sqrt{10}+7\right)^{2}+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3}-\frac{3\left(89-28\sqrt{10}\right)}{3\times 3}$$

\frac{3\left(2\sqrt{10}+7\right)^{2}+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3} va \frac{3\left(89-28\sqrt{10}\right)}{3\times 3} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{3\left(2\sqrt{10}+7\right)^{2}+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)-3\left(89-28\sqrt{10}\right)}{3\times 3}$$

\left(a+b\right)^{2}=a^{2}+2ab+b^{2} binom teoremasini \left(2\sqrt{10}+7\right)^{2} kengaytirilishi uchun ishlating.

$$\frac{3\left(4\left(\sqrt{10}\right)^{2}+28\sqrt{10}+49\right)+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3}-\frac{89-28\sqrt{10}}{3}$$

\sqrt{10} kvadrati – 10.

$$\frac{3\left(4\times 10+28\sqrt{10}+49\right)+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3}-\frac{89-28\sqrt{10}}{3}$$

40 hosil qilish uchun 4 va 10 ni ko'paytirish.

$$\frac{3\left(40+28\sqrt{10}+49\right)+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3}-\frac{89-28\sqrt{10}}{3}$$

89 olish uchun 40 va 49'ni qo'shing.

$$\frac{3\left(89+28\sqrt{10}\right)+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{3\times 3}-\frac{89-28\sqrt{10}}{3}$$

9 hosil qilish uchun 3 va 3 ni ko'paytirish.

$$\frac{3\left(89+28\sqrt{10}\right)+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{9}-\frac{89-28\sqrt{10}}{3}$$

Ifodalarni qo‘shish yoki ayirish uchun ularni yoyib, maxrajlarini bir xil qiling. 9 va 3 ning eng kichik umumiy karralisi 9. \frac{89-28\sqrt{10}}{3} ni \frac{3}{3} marotabaga ko'paytirish.

$$\frac{3\left(89+28\sqrt{10}\right)+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{9}-\frac{3\left(89-28\sqrt{10}\right)}{9}$$

\frac{3\left(89+28\sqrt{10}\right)+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)}{9} va \frac{3\left(89-28\sqrt{10}\right)}{9} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{3\left(89+28\sqrt{10}\right)+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)-3\left(89-28\sqrt{10}\right)}{9}$$

3\left(89+28\sqrt{10}\right)+4\left(7+2\sqrt{10}\right)\left(7-2\sqrt{10}\right)-3\left(89-28\sqrt{10}\right) ichidagi ko‘paytirishlarni bajaring.

$$\frac{267+84\sqrt{10}+196-56\sqrt{10}+56\sqrt{10}-160-267+84\sqrt{10}}{9}$$

267+84\sqrt{10}+196-56\sqrt{10}+56\sqrt{10}-160-267+84\sqrt{10} hisob-kitobini qiling.

$$\frac{36+168\sqrt{10}}{9}$$

Omil

$$\frac{4 {(14 \sqrt{10} + 3)}}{3} = 63,029182989809755$$