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
a, (x+10/4x-8) . (4-2x/x+2)
b, (1-4x^2/x^2+4x) : (2-4x/3x)
c, ( 4y^2/7x^4) : (-8y/35x^2)
d, (x^2-4/3x+12) . (x+4/2x-4)
Phân tích đa thức thành nhân tử.
1)x^4+2x^3-4x-4
2)(x+2)(x+4)(x+6)(x+8)+16
3)(x^2+x).(x^2+x+1)-6
4)(x^2+4x+8)^2+3x(x^2+4x+8)
Bài 4: Tìm x, biết:
a) 3(2x – 3) + 2(2 – x) = –3 ; b) x(5 – 2x) + 2x(x – 1) = 13 ;
c) 5x(x – 1) – (x + 2)(5x – 7) = 6 ; d) 3x(2x + 3) – (2x + 5)(3x – 2) = 8 ;
e) 2(5x – 8) – 3(4x – 5) = 4(3x – 4) + 11; f) 2x(6x – 2x 2 ) + 3x 2 (x – 4) = 8.
Tìm x 2.(5x-8)-3(4x-5)=4(3x-4)+11 3 . 2(x³-1)-2x²(x+2x⁴)+(4x⁵+4)x=6
Phân tích đa thức thành nhân tử
1) 4x^4+4x^3+5x^2+2x+1
2) x^8+x+1
3) x^8+3x^4+4
4) 3x^2+22xy+11x+37y+7^2+10
5) x^4-8x+63
Tìm x: (x²-2)×(x+4)-4x(x-3)=-8+3x
Tìm x, biết:
a) 2(5x-8)-3(4x-5) = 4(3x-4) + 11;
b) 2 x ( 6 x - 2 x 2 ) + 3 x 2 ( x - 4 ) = 8;
c) 2 ( x 3 - 1 ) - 2 x 2 ( x + 2 x 4 ) + ( 4 x 5 + 4 ) x = 6;
d)(2x)2(4x-2)-(x3 -8x2) = 15.
phân tích đa thức thành nhân tử
1)ab(a+b)-2bc(b-2c)-2ca(a-2c)-4abc
2)a^2b+2ab^2+4b^2c+4bc^2+2c^2a+ca^2+4abc
3)(x^2-6x+5)(x^2-10x+21)-20
4)4(x^2+x+1)^2+5x(x^2+x+1)+x^2
5)x^4+5x^3-12x^2+5x+1
6)(x+1)(x-4)(x+2)(x-8)+4x^2
7)4x^3+5x^2+10x-12
8)(x+3)^2(3x+8)(3x+10)-8
9)(4x+1)(12x-1)(3x+2)(x+1)-4