Rut gon bieu thuc
3(2^2+1)(2^4+1)(2^8+1)(2^16+1)
Cho a - b = 1. Rut gon bieu thuc
M = ( a + b)( a^2 + b^2 )( a^4 + b^4 )( a^8 + b^8)( a^16 + b^16)
Cho a - b = 1. Rut gon bieu thuc
M = ( a + b)( a^2 + b^2 )( a^4 + b^4 )( a^8 + b^8)( a^16 + b^16)
B1: rut gon bieu thuc
a, (x+y)^2-4(x-y)^2
b, 2(x-y)(x+y)+(x+y)^2+(x-y)^2
B2: tim X
a, (2X-1)^2-4(X+2)^2=9
b, 3(X-1)^2-3X(X-5)=21
B3: Cho bieu thuc
M=(x+3)^3-(x-1)^3+12x(x-1)
a, Rut gon bieu thuc tren
b, Tinh gia tri M tai x=-2/3
c, Tim x de M=16
rut gon bieu thuc (6x-1)^2+(6x+1)^2-2(1+6x)(6x+1)
rut gon bieu thuc
(2x-1).(x-2)
cho A= (2x-1)^2 -5x.(x-1)+2.(x+1).(x-2) rut gon bieu thuc A
rut gon bieu thuc: 2x2(x-2) - 2x(x-1)(x+1)
rut gon bieu thuc tren (x-1)^3-(x-1).(x^2+x+1)
