\(x-\frac{1}{2}x=\frac{1}{3}-\frac{1}{4}x\)
\(=>\left(1-\frac{1}{2}\right)x=\frac{1}{3}-\frac{1}{4}x=>\frac{1}{2}x=\frac{1}{3}-\frac{1}{4}x\)
\(=>\frac{1}{2}x+\frac{1}{4}x=\frac{1}{3}=>\left(\frac{1}{2}+\frac{1}{4}\right)x=\frac{1}{3}=>\frac{3}{4}x=\frac{1}{3}=>x=\frac{1}{3}:\frac{3}{4}=\frac{4}{9}\)
Vậy x=4/9
Tìm x: \(\frac{3\frac{1}{2}x-4}{6}+\frac{2+\frac{1}{4}x}{3}=1\frac{1}{4}x\left(x-1\right)-\frac{7-\frac{3}{4}x}{3}\)
bai 1: cho cac da thuc
f(x)= x^5-3x^2+7x^4-x^5+2x^2-9x^3+x^2-1/4x+2x-3
g(x)=5x^4-x^5+1/2x^4+x^5+x^2-4x^4-2x^3+3x^2+x^3-1/4
a, thu gon va sap xep cac da thuc tren theo luy thua giam dancua ien
b,tinh f(1);f(-1); g(1); g(-1)
c,tinh f(x)+g(x);f(x)-g(x)
Tìm x : \(\frac{\left(x-3\right)^2}{2}-1\frac{1}{3}\left(x+2\right)^2-\frac{5}{4}\left(x-1\right)\left(x+1\right)=1\frac{1}{2}x\left(x-2\right)-x-4\)
A= 4 x ( 3^2+1 ) x ( 3^4+1 ) x ( 3^8+1 ) x ( 3^16+1 ) và B= 3 ^32 -1
Tìm x biết
a,|x-1|+2x=3
b,|x+1|+|x+3|=10-4x
c,|x+1++3|x-2|-5|4-x|=13-2x
d,3|x-2|-2|x+5|+4|x-1|=9-7x
1)(x+7)(3x-1)=49-x^2
2)(2x+1)^2-(x-1)^2=0
3)(1-2x)^2-(x+3)^2+3(x+1)(1-x)=8
4)(x-3)^2-(x+3)^2=24
Giúp mk nha
Tìm x: 1 + 2 ( x - 1 )( x + 2 ) - 2 ( 2x - 1 )^2 = 3 - 4 ( 2 + 3x ) - 3 (x + 1)
Bạn nào giúp mik giải bài toán này với:
* ( 3/10 - 4/15 - 7/20 ) x 5/19 tất cả trên ( 1/14 + 1/7 - âm 3/35 ) x âm 4/3
*( 1+2+3+...+100) x (1/3 -1/5 -1/7 -1/9) x (6,3 x 12 - 21 x 3,6) tất cả trên 1/2 + 1/3 + 1/4 +....+1/100
rút gọn
a)(x-y).(x^3+x^2y+xy^2+y3)-x^4+y^4
b)(2-x).(1+2x)+(1+x)-(x^4+x^3-5x^2-5)
c)(x^2-7).(x+2)-(2x-1).(x-14)+x.(x^2-2x-22)+35
Tìm x biết :
a) \(-\frac{2}{3}.x+4=-12\)
b) \(-\frac{3}{4}+\frac{1}{4}:x=-3\)
c) \(\frac{x+1}{2}+\frac{x+2}{3}+\frac{x+1}{4}=\frac{x+1}{5}+\frac{x+1}{6}\)
d)\(\frac{x+1}{2009}+\frac{x+2}{2008}+\frac{x+3}{2007}=\frac{x+10}{2000}+\frac{x+11}{1999}+\frac{x+12}{1998}\)
