(x2 + 1)2 + 3x(x2 + 1) + 2x2 = 0
x^4 - 2x^3 + 4x^2 - 3x + 2 =0
x^4 + 4x^3 + 5x^2+ 2x -2 =0
(12x + 7)^2(3x + 2)(2x + 1) = 3
tìm x
a(14x^3+12x^2-14x):2x=(x+2)(3x-4)
b(4x−5)(6x+1)−(8x+3)(3x−4)=15
Giai PT a, 6/x^2-1 + 5 = 8x-1/4x+4 - 12x-1/4-4x
b, 2x+1/2x-1 - 2x-1/2x+1 = 8/4x^2 -1
c, 3/2x-16 + 3x-20/x-8 + 1/8 = 13x-102/3x-24
d, x+4/x^2-3x+2 - x+1/x^2 -4x+3 = 2x+5/x^2-4x+3
giải giúp mình bài này
rút gọn
a/ 3x(12x-4)-9x(4x-3)_
b/ x(5-2x)+2x(x-1)
c/ 5x(12x+7)-3x(20x-5)
d/ 3x(2x-7)+2x(5-3x)
e/ (12x-5)(4x-1)(3x-7)(1-16x)
mình đang cần gấp
thanks trước nha!!!!
Bài 2: Tìm x, biết:
a/ 12x(x – 5) – 3x(4x - 10) = 120
b/ 9x(x + 4) – 5x(3x + 2) = 112 - 2x(3x + 1)
c/ 3x(1 – x) - 5x(3x + 7) = 154 + 9x(5 – 2x)
Bài 1: Rút gọn
a. 4x2.(3x4-2)-12x6
b. 3x(4x-1)-(2x+3).(6x-1)
c. (y2+3)2-(y2-3).(y2+3)
Bài 3: Tìm x
a. (4x-1).(3x-4)-2x(6x-5)=1
b. (2x-3)2-64=0
a)3x*(4x^2-x+7) b)(2x-1)*(4x+5) c)(12x^7-9x^5+6x^3)3x^2
a) (12x-5)(4x-1)+(3x-7)(1-16x)=81
b) (2x-3)(2x+3)-(4x+1).x=1
c) \(3x^2-\left(x+2\right)\left(3x-1\right)=-7\)
Bài 1:Rút gọn biểu thức
a.(x-2)(2x-1)-(2x-3)(x-1)-2
b. x(x+3y+1) -2y (x-1) - (y+x+1)x
Bài 2: Tìm x
a. (14x^3 + 12x^2 -14x) :2x = (x+2) (3x-4)
b. (4x - 5) (6x+1) - (8x+3) (3x-4) =15