Khi nhan 1 so thap phan co 2 chu so o phan thap phan voi 12,35 mot ban da dat cac tich rieng nhu doi voi phep cong va co ket qua la 220,66 . Hay tim ket qua dung cua phep nhan do . biet rang dau phay o cac thua so thang cot voi nhau

Khi tru mot so tu nhien di mot so thap phan co 1 chu so o phan thap phan, mot ban da dat tinh nhu doi voi phep tru 2 so tu nhien va van danh dau phay o ket qua thu duoc thang hang voi dau phay cua so thap phan. Vi the ket qua thu duoc giam di so voi ket qua dung la 1805,4. Tim so tu nhien trong phep tru do

1) Thuc hien phep tinh cong 2 phan thuc \(\dfrac{2x}{x^2-2x+1}+\dfrac{x+1}{x-1}\) duoc ket qua la:

A. \(\dfrac{x^2+2x+1}{\left(x-1\right)^2}\)             B. \(\dfrac{x^2+2x-1}{\left(x-1\right)^2}\)      C. \(\dfrac{x^2-x-1}{\left(x-1\right)^2}\)           D. \(\dfrac{x^2-2x-1}{\left(x-1\right)^2}\)

1. khi nhan mot so thap phan co hai chu so o phan thap phan voi 12,35,mot ban da dat tich rieng thang cot voi nhau nhu doi voi phep cong va co ket qua la 220,66. Hay tim ket qua dung cua phep nhan do . Biet rang cac dau phay o cac thua so va ket qua van dat thang cot voi nhau ?

2.tim 2 so biet thuong cua chung bang 1,2 va biet hieu cua chung bang 13,58 ?

ai lam nhanh se duoc tick day ?

viet dang tong quat cac phep tinh giao hoan,ket hop cua phep cong,phep nhan,tinh chat phan phoi cua phep nhan doi voi phep cong

viet dang tong quat cac tinh chat giao hoan, ket hop cua phep cong, phep nhan, tinh chat phan phoi cua phep nhan doi voi phep cong

viet dang tong quat cac tinh chat giao hoan, ket hop cua phep cong, phep nhan, tinh chat phan phoi cua phep tinh doi voi phep cong.

viuet dang tong quat cac tinh chat giao hoan,ket hop cua phep cong, phep nhan,tinh chat phan phoi cua phep nhan doi voi phep cong

khi nhan 1 so tu nhien voi 327 do so xuat mot hoc sinh da doi cho chu so hang tram va hang chuc cua thua so thu hai nen ket qua phep tinh giam di 37890 don vi