Violympic toán 8
Các câu hỏi tương tự
1,Giải Pt
a,\(\frac{3x-7}{2}+\frac{x+1}{3}=-16\)
b,\(x-\frac{x+1}{3}=\frac{2x+1}{5}\)
c,\(\frac{7-3x}{12}+\frac{3}{4}=2\left(x-2\right)+\frac{5\left(5-2x\right)}{6}\)
e,\(\frac{3\left(x+3\right)}{4}+\frac{1}{2}=\frac{5x+9}{3}-\frac{7x-9}{4}\)
giải phương trình
a) 39-2(x+3)=x-10
b)\(\frac{x+5}{2}+\frac{3-2x}{4}=x-\frac{7+x}{6}\)
c)\(x^2-4=\left(x-2\right)\left(3x+1\right)\)
d)\(\frac{2x+5}{2x}-\frac{x}{x+5}=0\)
giải pt: a. (x - 2)(x+1)(x+3) = (x+3)(x+1)(2x-5)
b. \(5+\frac{96}{x^2-16}=\frac{2x-1}{x+4}+\frac{3x-1}{x-4}\)
bài 3,Giải PT
a,\(\frac{3}{2}.\left(x-\frac{5}{4}\right)-\frac{5}{8}=x\\ \)
b,\(\frac{7x-1}{6}+2x=\frac{16-x}{5}\)
c,\(\frac{10x+3}{12}=1+\frac{6+8x}{9}\)
Bµi 5: Gi¶i PT sau.
a,frac{5x-2}{2-2x}+frac{2x-1}{2}+frac{x^2+x-3}{1-x}1
b,frac{6x-1}{2-x}+frac{9x+4}{x+2}frac{3x^2-2x+1}{x^2-4}
c,frac{1}{x-1}+frac{2x^2-5}{x^3-1}frac{4}{x^2+x+1}
d) (x2 + 4x + 8)2 + 3x(x2 + 4x + 8) + 2x2 0
e) x4 + 2x3 + 4x2 + 2x + 1 0
f,frac{3x-1}{x-1}-frac{2x+5}{x+3}+frac{4}{x^2+2x-3}1
Đọc tiếp
Bµi 5: Gi¶i PT sau.
\(a,\frac{5x-2}{2-2x}+\frac{2x-1}{2}+\frac{x^2+x-3}{1-x}=1\)
b,\(\frac{6x-1}{2-x}+\frac{9x+4}{x+2}=\frac{3x^2-2x+1}{x^2-4}\)
\(c,\frac{1}{x-1}+\frac{2x^2-5}{x^3-1}=\frac{4}{x^2+x+1}\)
d) (x2 + 4x + 8)2 + 3x(x2 + 4x + 8) + 2x2 = 0
e) x4 + 2x3 + 4x2 + 2x + 1 = 0
\(f,\frac{3x-1}{x-1}-\frac{2x+5}{x+3}+\frac{4}{x^2+2x-3}=1\)
giải pt
1,frac{1}{x-1}+frac{2x^2-5}{x^3-1}frac{4}{x^2+x+1}
2,frac{x+4}{2x^2-5x+2}+frac{x+1}{2x^2-7x+3}frac{2x+5}{2x^2-7x+3}
3,frac{x+1}{x-1}-frac{x-1}{x+1}3xleft(1-frac{x-1}{x+1}right)
4,frac{2x}{x-1}+frac{4}{x^2+2x-3}frac{2x-5}{x+3}
5,frac{1}{x-1}-frac{7}{x+2}frac{3}{x^2+x-2}
6,frac{x+3}{x-4}+frac{x-1}{x-2}frac{2}{6x-8-x^2}
7,frac{1}{x-1}-frac{7}{x+2}frac{3}{1-x^2}
Đọc tiếp
giải pt
1,\(\frac{1}{x-1}+\frac{2x^2-5}{x^3-1}=\frac{4}{x^2+x+1}\)
2,\(\frac{x+4}{2x^2-5x+2}+\frac{x+1}{2x^2-7x+3}=\frac{2x+5}{2x^2-7x+3}\)
3,\(\frac{x+1}{x-1}-\frac{x-1}{x+1}=3x\left(1-\frac{x-1}{x+1}\right)\)
4,\(\frac{2x}{x-1}+\frac{4}{x^2+2x-3=}=\frac{2x-5}{x+3}\)
5,\(\frac{1}{x-1}-\frac{7}{x+2}=\frac{3}{x^2+x-2}\)
6,\(\frac{x+3}{x-4}+\frac{x-1}{x-2}=\frac{2}{6x-8-x^2}\)
7,\(\frac{1}{x-1}-\frac{7}{x+2}=\frac{3}{1-x^2}\)
Bài 1 : Giải pt:
a. \(\frac{2x+1}{3}\) - \(\frac{x}{4}\) = 2
b. \(\frac{2x+5}{2x}\) - \(\frac{x}{x+5}\) = 0
giải phương trình sau :
a) 5-(x-6) = 4(3-2x) b) 2x(x+2)2-8x2 = 2(x-2)(x2+4)
c) 7-(2x+4) = -(x+4) d) (x+1)(2x-3) = (2x-1)(x+5
f) \(\frac{7x-1}{6}+2x=\frac{16-x}{5}\)
e) \(\frac{\left(2x+1\right)^2}{5}-\frac{\left(x-1\right)^2}{3}=\frac{7x^2-14x-5}{15}\)
Giải các phương trình và bất phương trình sau:
a, \(\frac{x-1}{2}+\frac{x-2}{3}+\frac{x-3}{4}=\frac{x-4}{5}+\frac{x-5}{6}\)
b, \(\frac{2x\left(x^2+1\right)-x^2-4}{3}+x\left(x^2-x+1\right)>\frac{5x^2+5}{3}\)