Các câu hỏi tương tự
2,Chung minh voi moi x nguyen duong thi phan so sau toi gian:
\(\frac{6+8x+15x^2}{13+21x+30x^2}\)
giup minh nhe minh dang can gap.
GTLL cua bieu thuc 14+2x-2x^2 la ....... nhap ket qua duoi dang phan so gon nhat
Can bac hai cua 64 co the viet duoi dang nhu sau: \(\sqrt{64}\)= 6+\(\sqrt{4}\)
Hoi co ton tai hay khong cac so co 2 chu so co the viet can bac hai cua chung duoi dang nhu tren va la mot so nguyen? Hay chi ra toan bo cac so do.
Cm \(\frac{2018!+1}{2019!+1}\) la phan so toi gian
viet cac cong thuc 2(x-2)^2 : x+1 va 2x^2-10x+12 : x-1 duoi dang nhung phan thuc co cung tu thuc
Chung Minh moi so Nguyen le deu Viet duoc duoi dang hieu 2 so chinh phuong
viet gon bieu thuc sau duoi dang 1 phan thuc :
(x2 -x+1)(x4 -x2 +1)
phan tich da thuc x2-5x+4 duoi dang: x2-5x+4=(x+1)2+b(x+1)+c
khi do b+c=?
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 .