Ta có: \(\left(x+2\right)^4+\left(x+4\right)^4\)
\(=\left(x^2+4x+4\right)^2+\left(x^2+8x+16\right)^2\)
\(=x^4+16x^2+16+8x^3+8x^2+32x+x^4+64x^2+256+16x^3+32x^2+256x\)
\(=2x^4+24x^3+120x^2+288x+272\)
2.(x-11)/x^2-4=x-2/x+2-3/x-2 giúp mk vs mk cảm ơn
Giúp mk vs mk cần gấp
X2.(x2+4)-X2 - 4
Thanks mn
ai giúp mk vs mai mk thi r
A= (1/x- 2 - 2x/ 4- x^2+ 1/2+x): (2/x - 1)
Giai các bpt sau
a,(x+2)(x-3)>0
b,(x-1)(x+4)≤0
giúp mk vs ạ ai nhanh mk tick nka
2x-3/4-x+1/3>1/2-3-x/5 Giúp mk vs mk đg cần gấp
giúp mk vs: CM :x4+y4=\(\frac{x^6}{y^2}+\frac{y^6}{x^2}\)
tìm x a) (8x+2) (1-3x)+(6x -1)(4x-10)=-50
b) (1 -4x)(x-1)+4(3x+2)(x+3)=38
c)5(2x+3)(x+2)- 2.(5x-4)(x-1)=75
hộ mk vs ạ
