\(\left(y+2\right)^2\)\(=y^2+2.2.y+2^2=y^2+4y+4\)
\(\left(y+2\right)^2=y^2+4y+4\)
Tinh
3^2+2=
33^2+22=
333^2+222=
Em rut ra gi ve bai toan tren…..... Cac ban lam jum mik mik tick cho het nha.
1) Phan tich da thuc sau thanh nhan tu: x2-x-2008.2009
2) Chung minh rang voi moi x,y,z ta luon co: x2+4y2+z2>=2x+12y+4z
3) Cho a-b=4. Tinh gia tri cua bieu thuc: a3-12ab-b3
cac ban lam duoc cau nao thi giup mik nha. mik dang can gap lam
bai 1 tinh
a (x-2)(x^2+2x+4)-x(x^2-1)
b (x+1)(x-3)-(x+4)(x-4) lam nhanh giup em nha cam on
cmr vs moi n thuoc N thi n^6-n^2 chia het cho 60
lam giup mink vs
xac dinh so a de 2x^2+ax+5 chia het cho x^2 - 2x +1
lam on giai giup minh, cam on cac ban nhieu
lam on giup t cau:cmr n^2+n+4 khong chia het cho 25 voi moi n la so tu nhien
Tim bo ba x y z thoa man
X^2+2y^2+2^2-2(xy+2y+2z+8)=0
Giup Minh nha can gap lam
tìm x,y biết:
2^x+2^y=496
giup mik nha
xyz−3xy−3xz+6x−yz+3y+2−6 cac ban lam giup mik voi
