Các câu hỏi tương tự
tim gia tri nho nhat cua bieu thuc tim gia tri nho nhat cua bieu thuc x^4-4x^3+12x^2-16x+16
1) Cho bieu thuc A=\(3+\frac{2}{x-1}\). Tinh gia tri cua bieu thuc A khi |2x-3|=1
2) Rut gon bieu thuc B=\(\frac{x}{x-1}\)-\(\frac{x-5}{x+1}\)-\(\frac{3-x}{1-x^2}\)
3) Tim cac gia tri nguyen cua x de bieu thuc \(\frac{B}{A}\)co gia tri nguyen duong
tim gia tri lon nhat cua bieu thuc A=3-4x/x2+1
1.cho bieu thuc A=\(\left(\frac{2}{x-2}+\frac{1}{x+2}\right):\frac{1}{x+2}\)
a.rút gọn bieu thuc A
b.tinh gia tri cua A tại x,biet x=1
2.tim x nguyen de gia tri cua bieu thuc A nguyen
a.\(A=\frac{3}{x+2}\)
b.\(A=\frac{x+3}{x-2}\)
tim gia tri nho nhat cua bieu thuc
A= (x-1)(x+2)(x+3)(x+6)
B=\(5x^2-4xy+y^2+4x+7\)
giup minh cau nay voi
tim gia tri cua x sao cho 2 bieu thuc sau co gia tri bang nhau
0,35x+3/4x và 4+x/10=x-39
Cho bieu thuc \(A=\left(\frac{x+1}{x-1}-\frac{x-1}{x+1}+\frac{x^2-4x-1}{x^2-1}\right).\frac{x+2016}{x}\)
a, Voi gia tri nguyen nao cua x thi bieu thuc A co gia tri nguyen
b,Voi gia tri nao cua x thi A co gia tri duong
chung minh gia tri cua bieu thuc sau ko phu thuoc vao gia tri cua bien
A=(x+2)(3x-1)-x(3x+3)-2x+7
B=( 2x-3 ) ( 2x+3 )-x( 3+4x )+3x+1
cho bieu thuc:
\(A=\left(\frac{2+x}{2-x}-\frac{4x^2}{x^2-4}-\frac{2-x}{2+x}\right):\left(\frac{x^2-3x}{2x^2-x^3}\right)\)
a. Tim DKXD roi rut gon A
b. Tim x de A>0
c. Tinh gia tri cua A khi \(\left|x-7\right|=4\)