Các câu hỏi tương tự
\(\frac{1}{a\left(a-b\right)\left(a-c\right)}+\frac{1}{b\left(b-a\right)\left(b-c\right)}+\frac{1}{c\left(c-a\right)\left(c-b\right)}\) giup mik vs de bai la thuc hien phep tinh nhe
khong thuc hien phep tinh hay cm rang A chia het cho B biet rang
A=(x+1)(x+3)(x+5)(x+7)+15 va B = x+6
E= \(\frac{a^3}{\left(a-b\right)\left(a-c\right)}+\frac{b^3}{\left(b-a\right)\left(b-c\right)}+\frac{c^3}{\left(c-a\right)\left(c-b\right)}\) thuwcj hien phep tinh a
thuc hien phep tinh :
a, (x+1)(1+x-x^2+x^3-x^4)-(x-1)(1+x+x^2+x^3+x^4)
b, (2b^2-2-5b+6b^3)(3+3b^2-b)
1 thuc hien phep tinha, 3x2y (3x – 4y); b, ; c, (3x + 5)( 3xy - 5x)
Đọc tiếp
1 thuc hien phep tinh
a, 3x2y (3x – 4y); b, ; c, (3x + 5)( 3xy - 5x)
Cho cac so thuc phan a,b,c khac nhau doi mot va thoa man a^2-b=b^2-c=c^2-a . CMR (a+b+1)()b+c+1(c+a+1)=-1- de hsg tinh mon toan 9 nam 2012
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.
cho a+b+c=0; ab+bc+ca=0. tinh gia tri cua bieu thuc A=(a-1)^2008+b^2009+(c+1)^2010
Bai 1: Thuc hien phep tinha) 2x(3x2-5 X+3). b) -2X ( x2+5x-3). c) --1/2x2(2x3-4x+3).Bai 2 Thuc hien phep tinh.a) (2x-1)(x2+5-4). b) -(5x-4)(2x+3). c) (2x-y)(4x2-2xy+y2).d) (3x-4)(x+4)+(5-x)(2x2+3x-1). e)7x(x-4)-(7x+3)(2x2-x+4)
Đọc tiếp
Bai 1: Thuc hien phep tinh
a) 2x(3x2-5 X+3). b) -2X ( x2+5x-3). c) --1/2x2(2x3-4x+3).
Bai 2 Thuc hien phep tinh.
a) (2x-1)(x2+5-4). b) -(5x-4)(2x+3). c) (2x-y)(4x2-2xy+y2).
d) (3x-4)(x+4)+(5-x)(2x2+3x-1). e)7x(x-4)-(7x+3)(2x2-x+4)