Các câu hỏi tương tự
Cho cac bieu thuc :
P = ( a + 1 )2 + ( b + 1 )2 + ( c + 1 )2 + 2 ( ab + ac + bc )
Q = ( a + b + c + 1 )2
Tinh P - Q
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
cho a,b,c khac nhau doi mot va 1/a+1/b+1/c=0.rut gon cac bieu thuc
N=bc/a^2+2bc+CA/B^2+2AC+AB/C^2+2AB
cho 1/a+1/b+1/c=0.tinh gia tri bieu thuc P=ab/c2+bc/a2+ca/b2
Cho a^2 + b^2 + c^2 = a^3 + b^3 + c^3 = 1. tinh gt cac bieu thuc : C = a^2 + b^9 + c^1945.
Dang I: tinh gia tri bieu thuc
Bai 12: Cho x=2011. tinh gia tri chua bieu thuc
\(x^{2011}-2012x^{2010}+2012x^{2009}-2012x^{2008}+....-2012x^2+2012x-1\)
bai 11: Cho da thuc P(x)=ax\(^3\)+bx\(^2\)+cx+d (a khac 0)
Biet p(1)=100, p(-1)=50,p(0)=1,[(1)=120. Tinh p(3)
bai 10: Tam thuc bac hai la da thuc co dang f(x) =ax+b voi a,b,c la hang a khac 0. Hay xac dinh cac he so a,b biet f(1)=2 , F(3)=8
cho a,b,c la cac so thoa man (a+1)^2+(b+2)^2+(c+3)2<2010.tim GTNN cua bieu thuc A=ab+b(c-1)+c(a-2)
bai 1: Tinh gia tri cuar cac bieu thuc sau
a, B=\(\frac{3}{0,29972997...}+\frac{3}{0,29972997...}+\frac{3}{0,0029972997....}\)
b, C=\(\frac{1^2}{1.3}+\frac{2^2}{3.5}+\frac{3^2}{5.7}+....+\frac{1005^2}{2009.2011}_{+\frac{1006^2}{2011.2013}}\)
cach giai voi nha
Cho 2 so thuc a, b thoa man dieu kien ab= 1, a+ b\(\ne\)0. Tinh gia tri bieu thuc :
P= \(\frac{1}{\left(a+b\right)^3}\left(\frac{1}{a^3}+\frac{1}{b^3}\right)+\frac{3}{\left(a+b\right)^4}\left(\frac{1}{a^2}+\frac{1}{b^2}\right)+\frac{6}{\left(a+b\right)^3}\left(\frac{1}{a}+\frac{1}{b}\right)\)