\(M=\left(a+4\right)^2+2\left(a+4\right)\left(6-a\right)+\left(6-a\right)^2\)
\(\Rightarrow M=\left(a+4+6-a\right)^2\)
\(\Rightarrow M=\left(1982+4+6-1982\right)^2\)\(=10^2=100\)
Tinh gia tri cua bieu thuc A, biet A= \(\frac{1}{2}\left(x^2+y^2\right)^2-2x^2y^2\)voi \(^{x^2-y^2=4}\)
Tinh gia tri cua bieu thuc a^4+b^4+c^4,biet rang a+b+c=0 va:
a^2+b^2+c^2=2
Tinh gia tri cua bieu thuc A = x6-2*x4+x3+x2-x biet x3-x=8?
cho x+y =1 . tinh gia tri cua bieu thuc A=x^3+y^3+3xy
chox-y=1. tinh gia tri cua bieu thuc B=x^3-y^3-3xy
cho x+y=1 . tinh gia tri cua bieu thuc C=x^3+y^3+3xy(x^2+y^2)+6x^2*y^2(x+y)
Tinh gia tri cua bieu thuc A=x-2009/2009x+y
Biet x^2-2y^2=xy( voi 2009x+y khac 0 )
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
Tim gia tri nho nhat cua cac bieu thuc sau
a) A=|5x+2|+2015
b) B=2016-|4-3x|
c) C=|x-4|+|x-3|
giup minh giai cac gia tri nay voi...dung minh se tich
HỨA SẼ TÍCH...
Cho a+b+c=0; a2+b2+c2=4. Tinh gia tri cua bieu thuc: A=ab+bc+ca; B= a4+b4+c4
TINH GIA TRI BIEU THUC:
A=X^5 + 5X^4 - 5X^3 - 5X^2 + 5X-1
Voi X = 4
