Tìm x :
1) ( x - 6 )( x2 + 6x + 36 ) - ( x + 4 )3 = ( x - 2 )3 + ( x + 5 )( x2 - 10x + 25 ) - ( 2x3 + 6x2 )
2) ( 2x + 3 )3 - ( 2x + 5 )( 4x2 - 10x + 25 ) = ( 6x - 1 )2 - ( x - 2 )( x2 + 2x + 4 ) + x3
Các bạn giải cho mình 2 câu này nha. Mình đang cần gấp.
Thực hiện phép tính:
(2x3-21x2+67x-60):(x-5)
(x^4+2x^3+x-25):(x^2+5)
tìm x biết:
1) x2 - 10x = -25
2) 5x (x-1) = x-1
3) 2 (x+5) - x2 - 5x = 0
4) x2 - 2x -3 = 0
5) 2x2 + 5x - 3 = 0
Tìm x
a)(2x+1)2-4(x+2)2 =9
b)(3x-1)2 +2(x+3)2 +11(x+1)(1-x)=6
c)(x+1)3 - x2 (x+3)=2
d)(x-2)3 -x(x+1)(x-1)+6x2 =5
e)(x-3)(x2 +3x +9)-x(x+4)(x-4)=5
g)(x-2)3 -(x+5)(x2 -5x+25)+6x2 =11
Giải các phương trình:
\(a,\frac{x+5}{x^2-5x}-\frac{x-5}{2x^2+10x}=\frac{x+25}{2x^2-50}\)
\(b,\frac{2}{4-x^2}+\frac{1}{x^2-2x}=\frac{x-4}{x^2+2x}\)
tìm x ,biết :
a, x^2-3x = 0
b,x^5-9x = 0
c, ( x^3-4x^2) - ( x-4) = 0
d, (4x^2-25)^2- 9 ( 2x - 5 )^2= 0
Tìm x:
a) 2x (x-5) -(x2-10x +25)=0
b) x2 - 9 +3x(x+3) = 0
c) x3 - 16x = 0
d) (2x+3)(x-2) - (x2 -4x+4) = 0
e) 9x2 -(x2 -2x +1)=0
f)x3-4x2 -9x +36 = 0
g) 3x - 6 = (x-1).(x-2)
i) (x-2).(x+2) +(2x+1)2 =-5x.(x-3) =5
k) x2 -1 = (x-1).(2x+3)
l) (2x-1)2 +(x+3).(x-3) -5x(x-2)=6
tìm x biết:
a, 4x\(^2\)-25-(2x-5)(2x+7)=0
b, 2x\(^3\)+3x\(^2\)+2x+3=0
c, x\(^3\) +27+(x+3)(x-9)=0
d, x\(^2\)(x+7)-4(x+7)=0
Tìm x)
x(1-2x) +(x-2).(2x-3) = 0
x(2x -4) -2x (x+3) =0
(2x+3)2+(x-3).(2x+3) =0
10y2 -2xy +25 +x2 +30y
(2x-1)2 +(2x+1)2 -2(2x-2)(2x+1) +x = 12