cho da thuc P = (-2/3x^3y^2)(1/2x^2y^5)

a) thu gon da thuc P roi xac dinh he so va phan bien cua don thuc ?

b) tinh gia tri cua P tai x = -1 , y =1

giup mk can rat gap

cho da thuc P = (-2/3x^3y^2)(1/2x^2y^5)

a) thu gon da thuc P roi xac dinh he so va phan bien cua don thuc ?

b) tinh gia tri cua P tai x = -1 , y =1

giup mk can rat gap

cho bieu thuc P= (\(\frac{3x+\sqrt{9x}-3}{x+\sqrt{x}-2}+\frac{1}{\sqrt{x}-1}+\frac{1}{\sqrt{x}-3}\) ): \(\frac{1}{x-1}\)

^{a) Tim dieu kien de P co nghia, rut gon bieu thuc P.}

^{b) Tim cac so tu nhien x de \(\frac{1}{P}\)}la so tu nhien

c) Tinh gia tri cua P voi x= 4-\(2\sqrt{3}\)

Giup mk vs mk dang can gap

Tinh gia tri cua bieu thuc :

a) A= 5a^3 b^4 voi a = -1, b = 1

b) B = 9a^5 b^2 voi a = -1, b = 2

Giup minh voi minh dang can cuc gap.

Cho bieu thuc A = 3/n-2

a) Tim cac so nguyen n de bieu thuc A la phan so

b) Tim cac so nguyen n de A la mot so nguyen

Cac giup minh nhe minh dang can gap.

Gia tri bieu thuc [3/7 + 2/7] - 1/5 = ............

A 15/35                   B 18/35                 C 15/7                       D 4/9

GIUP MINH VOI MINH DANG CAN GAP

Cho bieu thuc : 

C = ( 1 - 3x ) . x - 2x . ( x - 1 ) + 8

a ) Thu gon C

b ) Tinh gia tri bieu thuc voi x = -3

c ) Tim x de C = 8

d ) Tim ngiem cua C

dau . la dau nhan nha cac bn

nhanh nhanh nha mk dang can gap

a) tim gia tri nho nhat cua bieu thuc : A = | 1-x | + 8

b) tim cac so nguyen x biet 13 la boi cua x - 4

c) tim so nguyen x sao cho ( x + 5 ) chia het cho ( x + 3 )

giup minh voi! minh can gap gap gap.....

lap nien bieu cac giai doan lich su lon cua campuchia den giua the ki XIX

giup mk vs ai nhanh mk tick mk dang can gap