\(x^4+2x^3+2x^2+2x+1\\ =x\left(x^3+2x^2+2x+2\right)+1\)
\(x^5+x+1\\ =x\left(x^4+1\right)+1\)
\(x^4+2x^3+2x^2+2x+1\\ =x\left(x^3+2x^2+2x+2\right)+1\)
\(x^5+x+1\\ =x\left(x^4+1\right)+1\)
Phân tích đa thức thành nhân tử:
1). (x - 3)(x - 1) - 3(x - 3)
2). (6x + 3) - (2x - 5)(2x + 1)
3). (x - 1)(2x + 1) + 3(x - 1)(x + 2)(2x + 1)
4). (3x - 2)(4x - 3) - (2 - 3x)(x - 1) - 2(3x - 2)(x + 1)
5). \(\left(x-5\right)^2+\left(x+5\right)\left(x-5\right)-\left(5-x\right)\left(2x+1\right)\)
6). (a - b)(a + 2ab) - (b - a)(2a - b) - (a - b)(a + 3b)
Tìm x biết a) x(x-25)=0 b)2x(x-4)-x(2x-1)=-28 c)x^2 -5x=0 d)(x-2)^2-(x+1)(x+3)=-7 e)(3x+5).(4-3x)=0 f)x^2-1/4=0
bài 1: phân tích đa thức thanh nhân tử
1) x2 - 2x - 4y2 - 4y 2) x4 + 2x3 - 4x - 4 3) x3 +2x2y -x - 2y
4) 3x2 - 3y2 - 2(x - y)2 5) x3 - 4x2 -9x + 36 6) x2 - y2 - 2x - 2y
7) (3x-1)2 - 16 8) (5x - 4)2 - 49x2 9) (2x +5) - (x-9)2
1.tìm x:
c.2x^2=x
d.x^3=x^5
e.x^2(x+1)+2x(x+1)=0
g.x(2x-3)-2(3-2x)=0
a. (2x+y)\(^2\)+(xy)\(^2\)+2(2x+y)(x-y)
b. 5(2x-1)\(^2\)+4(x-1)(x+3)-2(5-3x)\(^2\)
tìm x biết
a) x(x-5)=5-x
b) (2x+3)(x-1)+(2x-3)(1-x)=0
c) (x+2)2=x+2
d) x3-2x=0
m.n ơi giúp e với
Tìm x biết :
a. (x-4)^2=x+1
b. 5.(x+3)+2x.(3+x)=0
c. (x-4)^2-36=0
d. (7x-4)^2-(2x+1)^2=0