Các câu hỏi tương tự
rut gon bieu thuc a,(3x+2)^2+4x-3^2+2(5x-2)(5x+2)-75x^2
b,(x-2)^3+(2x+1)^3++2(x+2)(1-x)-9x^3+2x
rut gon bieu thuc :P=5x(x-3)(x+3)-(2x-3)^2+34x(x+2)-5(x+2)^3+25x-1
cho bieu thuc : M ( x phan x^2 -25 - x-5 phan x^2 +5x ) : 2x-5 phan 5x - x^2
a) rut gon M
b) tinh gia tri cua M voi x = -2010
c) tim tat ca cac gia tri nguyen cua x de M co gia tri nguyen.
tim x bt
8x3+12x2+6x+1=0
2x2+5x-3=0
phan tich da thuc thanh nhan tu
x3-x+3x2y+3xy2+y3-y
tim x bt:
x2-2x-3=0
rut gon
(5x-1)+2(1-5x)(4+5x)+(5x+4)2
(x-y)3+(y+x)3+(y-x)3-3xy(x+y)
Rut gon bieu thuc:
2(2x-3)^2+(x-2)(x+2)
(12x^2y^2-6x^3y^2):3x^2y:-4y(2x-5)
rut gon bieu thuc (6x+7)(2x-3)-(4x+1)(3x-7/4)
cho A= (2x-1)^2 -5x.(x-1)+2.(x+1).(x-2) rut gon bieu thuc A
bai 1
a = (3x / 2x + 4 ) + (x +3 /x ^ 2 - 4 )
a . tim x de gia tri phan thuc a duoc xac dinh
b. rut gon a
c. tinh gia trin cua a khi x bang -3
d . tim gia tri cua x de phan thuc co gia tri bang 2
1.Phan tich da thuc thanh nhan tu
A.(x^2-2x)(x^2-2x-1)-6
B.x^3-2x-1
2.Rut gon roi tinh gia tri bieu thuc khi x=2
1/x^2+x + 1/x^2+3x+2 + 1/x^2+5x+6 + 1/ x^2+7x+12