\(=x\left(x-4\right)+5\left(x-4\right)=\left(x+5\right)\left(x-4\right)\)
\(=x\left(x-4\right)+5\left(x-4\right)=\left(x+5\right)\left(x-4\right)\)
phan tich da thuc thanh nhan tu
x4 +y4 +64
1.Viet da thuc sau duoi dang binh phuong cua mot tong hoac mot hieu a)1:4a^2+2ab^2+4b^2
b)1:9-1:3y^4+y^8
2.Viet hang tu thich hop vao dau *de moi da thuc sau tro thanh binh phuong cua mot tong hoac mot hieu
a)25x^2+*+81
b)64x^2-*+9
Cac ban giup mk voi mk dang can bai nay gap
Viet cac da thuc sau duoi dang tich :
a, 100x2−(x2+25)2
b, 1+(x−y+5)2−2(x−y+5)
c, (x2+4y2−5)2−16(x2y2+2xy+1)
d, (x2+8x−34)2−(3x2−8x−2)2
Chung minh rang voi moi gia tri cua x cac dang thuc sau day nhan gia tri duong P=x^2-6x+10
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, \(2x^2-5x-1\)
6) binh viet:x2-12x+36=(x-6)2
Minh viet: x2-12x+36=(6-x)2
Huog neu nha xet minh viet sai , binh viet dung
Son noi:qua vi du minh rut ra hang dang thuc rat dep
Hay neu y kien cua em.Son da rut ra hang dang thuc nao ?
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
Tìm x
1) \(3\left(x-1\right)^2-3x\left(x-5\right)=1\)
2) \(\left(6x-2\right)^2+\left(5x-2\right)^2-4\left(3x-1\right)\left(5x-2\right)=0\)
3) \(\left(2x-5\right)\left(2x+5\right)-1=0\)
4) \(5x^2-20=0\)
Giusp mk vs
cho x2+2x-2=0 tinh gia tri bieu thuc M=x4+16x+2007