`4x^2 + y^2 + 12x + 4y + 13`
`= 4x^2 + 12x + 9 + y^2 + 4y + 4`
`= (4x^2 + 12x + 9)+ (y^2 + 4y + 4 )`
`= ((2x)^2 + 2 . 2x + 3 + 3^2) + (y^2 + 2y.2 + 2^2 )`
`= (2x + 3)^2 + (y + 2)^2`
viet cac bieu thuc sau duoi dang binh phuong cua mot tong hoac mot hieu
xy^2+(2+xy^2)+10-6x+x^2
CMR bieu thuc sau viet duoc duoi dang tong cac binh phuong cua hai bieu thuc
x2+2(x+1)2+3(x+2)2+4(x+3)2
Viet moi bieu thuc sau ve dang tong hoac hieu 2 binh phuong:
a) (x+y+4)(x+y-4)
b)(x-y+6)(x+y-6)
Viet bieu thuc sau duoi dang binh phuong cua mot tong:
2xy2 +x2y4 +1
Phan tich da thuc sau thanh nhan tu:
a) x2 -3x +2
b) 3x2 - 7x -10
c) 2x2 -5x -7
HELP ME!!!
viet da thuc sau duoi dang binh phuong cua 1 tong hoac 1 hieu
\(\left(2x+3y\right)^2+2\left(2x+3y\right)+1\)
viet cac bieu thuc sau duoi dang tong cua 3 binh phuong
a)(a+b+c)\(^2\)+a\(^2\)+b\(^2\)+c\(^2\)
b)2(a-b)(c-b)+2(b-c)(c-a)+2(b-c)(a-c)
ai giai giup minh minh tich cho
hay viet cac da thuc tren thanh tong binh phuong cua da thuc bac nhat,tu do tim ra gia tri x,y de cac da thuc tren bang 0
A=x2+y2+2x-4y+5
nho neu ca cach giai nhe moi nguoi
a/ Hieu cac binh phuong cua 2 so tu nhien chan lientiep la 8 . tim hai so ay
b/ tong cac binh phuong cua 2 so tu nhien le lien tiep laf 2594. tim hai so ay
c/ chung minh rang so 3599 duoc viet duoi dang tich cua 2 so tu nhien khac 1
Viet moi bieu thuc sau duoi dang 2binh phuong :
a; ( x+ y+4 ) .(x+y-4)
b; (x-y+6).( x+y-6)
c: ( x+2y+3z). (2y+3z-x)
Giup minh vs <3
lop8 Hang dang thuc nhaa .
viet da thuc sau thanh tong cua 2 binh phuong
a, x^2+2y^2-2xy-2x+2
b, 2x^2-2x+13
c, 3x^2+2x+3
