\(\dfrac{8}{x^2+3}+\dfrac{7}{x}=\dfrac{8x}{\left(x^2+3\right).x}+\dfrac{7\left(x^2+3\right)}{\left(x^2+3\right).x}=\dfrac{7x^2+28x+21}{x\left(x^2+3\right)}\)
cong phan thuc
a)x2+2/x2+4+5/x+2
b)x+y/2+x+2/2x2+4
c)8/(x2+3)(x2-1)+2/x2+3+1/X+1
cong phan thuc
x2+2/x2+4+5/x+2
cong phan thuc
8/(x2+3)(x2-1)+2/x2+3+1/X+1
cong phan thuc
x+y/2+x+2/2x2+4
cong phan thuc
x+y/2(x-y)+2y2/y-x
\(\dfrac{x}{x-y}-\dfrac{1}{x-y}-\dfrac{1-y}{y-x}\)
cong tru phan thuc
Cau 1:Lam tinh cong cac phan so sau:
a,2/7+3/7=
b,3/5+2/3=
tim da thuc f(x) bac 3 biet tai x=-1da thuc nhan gia tri 16 va khi lan luot chia f(x)cho x-,x+2,x-4 deu c so du la 16
1 , thực hiện các phép tính sau
a,\(\dfrac{x+1}{3}\)+\(\dfrac{2x-1}{3}\)
b,\(\dfrac{5x-2y}{x2-y2}\)+\(\dfrac{y-4x}{x2-y2}\)
c,\(\dfrac{x-1}{12x}\)+\(\dfrac{2x+7}{12x}\)+\(\dfrac{6-3x}{12x}\)
