=[2400+70(21)-04(21)^2]^- eching

$$= [ 2400 + 70 ( 21 ) - 04 ( 21 ) ^ { 2 } ] ^ { - }$$

Baholash

$$3870$$

Yechim qadamlari

1470 hosil qilish uchun 70 va 21 ni ko'paytirish.

$$2400+1470-0\times 4\times 21^{2}$$

3870 olish uchun 2400 va 1470'ni qo'shing.

$$3870-0\times 4\times 21^{2}$$

0 hosil qilish uchun 0 va 4 ni ko'paytirish.

$$3870-0\times 21^{2}$$

2 daraja ko‘rsatkichini 21 ga hisoblang va 441 ni qiymatni oling.

$$3870-0\times 441$$

0 hosil qilish uchun 0 va 441 ni ko'paytirish.

$$3870-0$$

3870 olish uchun 3870 dan 0 ni ayirish.

$$3870$$

Omil

$$2\times 3^{2}\times 5\times 43$$