Bài 3: Những hằng đẳng thức đáng nhớ
Các câu hỏi tương tự
rut gon bieu thuc sau:
(x+5)^3-15x(x+10)
Bai 1: Rut gon bieu thuc:
a, (x2+2)2- (x+2).(x-2).(x2+4)
b, (x+1)2-(x-1)2-3.(x+1).(x-1)
Giup minh voi ! THANK YOU !^^
thu gon bieu thuc
2x(1-x)+2x^2
Bai 1: Rut Gon Bieu Thuc :
a, (x2 - 1)3 - (x4+ x2+1) (x2- 1)
b, (x4 - 3x2+ 9) (x2+3) - (3+x2)3
Bai 5 : Tim GTLN hoac GTNN neu co cua cac bieu thuc
a, A x2-2x-1
b, B 4x2+4x+5
c, C 2x - x2- 4
GIUP MINH VOI CAM ON NHIEU !^^
Đọc tiếp
Bai 1: Rut Gon Bieu Thuc :
a, (x2 - 1)3 - (x4+ x2+1) (x2- 1)
b, (x4 - 3x2+ 9) (x2+3) - (3+x2)3
Bai 5 : Tim GTLN hoac GTNN neu co cua cac bieu thuc
a, A = x2-2x-1
b, B = 4x2+4x+5
c, C = 2x - x2- 4
GIUP MINH VOI CAM ON NHIEU !^^ 
cho x2+2x-2=0 tinh gia tri bieu thuc M=x4+16x+2007
Bai 1 : Tim gia tri nho nhat cua bieu thuc :
1, \(x^2-6x+6\)
2, \(3x^2-5x+2\)
3, \(5x^4+9x^2+13\)
4, \(x^2-5x+3\)
5, \(2x^2-5x-1\)
Bai 1: Rut gon bieu thuc
a, ( m+n )2 - ( m-n )2 + ( m+n ) ( m-n)
b, ( a+b)3 + ( a-b )3 - 2a3
c, ( 2x+1)2 + 2(4x2 - 1) + ( 2x-1 )2
d, ( a+b+c )2 - 2(a+b+c) (b+c ) + ( b+c )2
viet cac bieu thuc sau thanh binh phuong cua 1 tong hay 1 hieu
a)x2-20x+100
a)x2+10x+25
c) x2-12xy+36y2
3) viet cac bieu thuc sau duoi dang binh phuong mot tong hoac mot hieu :
a) 4x2+ 4xy +y2 b) 9m2 +n2-6mn
c) 16a2+25b2+40ab d) x2-x+ 1phan 4