Các câu hỏi tương tự
Thu gon bieu thuc:
E=|x-3|+|x2+1|-x (x-1)
rut gon bieu thuc
B=1/2+(1/2)^2+(1/2)^3+...+(1/2)^99
Rut gon bieu thuc
(x+1)2 - (x-1)2 - 3. (x+1). (x-1)
THU GON BIEU THUC SAU:
\(\frac{2017}{1}\)+\(\frac{2016}{2}\)+\(\frac{2015}{3}\)+.......+\(\frac{1}{2017}\)+2018 / \(\frac{1}{1}\)+\(\frac{1}{2}\)+\(\frac{1}{3}\)+....+\(\frac{1}{2018}\)
Bai 1: Rut gon bieu thuc sau
B=(2/3)^3×(-3/4)^4×(-1)^5/(2/5)^2 × (-5/12)^3
Bai 2: Tim ia tri bieu thuc sau
M= 512- 512/2- 512/2^2- 512/2^2 - 512/2^3...512/2^10
A=1/3(xy^2)^2.(-1/2x^2y)^2.4/5x^3
B=-2x^4y.1/4x^2y^2.4/5x^3
Thu gon da thuc tren
Xac dinh he so,tim bac cua da thuc vua tim dc
Tinh A+B
va A-B
Bai 2
A=15x^2y-7xy^2+8-y^3+7xy^2+2y^3-12x^2y-1/2
Thu gon da thuc
Tim bac cua da thuc
Tinh gia tri cua da thuc A tai x=-1/2,y=1
A=1/3(xy^2)^2. (1/2x^2y)^2.4/5x^3
B=2x^4y.1/4x^2y^2.(-2xy)^3
Thu gon da thuc tren
Xac dinh he so ,bac cua cac don thuc vua thu gon
Tinh A+B va A-B
A=1/3(xy^2)^2.(1/2x^2y)^2.4/5.x^3
B=-2x^4y.1/4x^2.y^2.(-2xy)^3
Thu gon da thuc tren
Xac dinh he so ,bac cua cac don thuc vua thu gon
Tinh A+B va A-B
rut gon bieu thuc 2ax^2-a(1+2x^2)-[a-x(x+a)]