Bài 9: Phân tích đa thức thành nhân tử bằng cách phối hợp nhiều phương pháp
Các câu hỏi tương tự
2)x^2-2xy+y^2-2x+2y
3)3x^2-2x-5
4)16-x^2+4xy-4x^2
5)x^2-2x+1-y^2
6)x^2+8x+15
7)(x^2+6x+8)(x^2+14x+48)-9
8)(x^2-8x+15)(x^2-16x+60)-24x^2
9)x^5+x^4+1
10)x^4-x^3-10x^2+2x+4
Phan tich da thuc sau thanh nhan tu ( giup minh voi cac ban oi : )
1/ x3 + 2x + x2
2/ 2x3 + 4x2 + 2x
3/ -3x3 - 5x2 + 8x
4/ x2 + 4x - 5
5/ 6x2 - 3x - 3
6/ 3x2 - 2x -5
7/ 3x2 - 2x -5
8/ x2 - 2x - 4y2 - 4y
9/ x3 + 2x2y + xy2 - 9x
10/ x2 - y2 + 6x +9
Đọc tiếp
Phan tich da thuc sau thanh nhan tu ( giup minh voi cac ban oi :<< )
1/ x3 + 2x + x2
2/ 2x3 + 4x2 + 2x
3/ -3x3 - 5x2 + 8x
4/ x2 + 4x - 5
5/ 6x2 - 3x - 3
6/ 3x2 - 2x -5
7/ 3x2 - 2x -5
8/ x2 - 2x - 4y2 - 4y
9/ x3 + 2x2y + xy2 - 9x
10/ x2 - y2 + 6x +9
a) \(25.\left(x-1\right)^2-16.\left(x+y\right)^2\)
b) \(x^3+3x^2+3x+1-27z^3\)
c) \(x^2-2xy+y^2-xz+yz\)
d) \(a^3x-ab+b-x\)
e) \(3x^2+6xy+9y^2-12\)
f) \(x^2+2x-4y^2-4y\)
g) \(xy-4+2x-2y\)
a) \(25.\left(x-1\right)^2-16.\left(x-y\right)^2\)
b) \(x^3+3x^2+3x+1-27z^3\)
c)\(x^2-2xy+y^2-xz+yz\)
d) \(a^3x-ab+b-x\)
e) \(3x^2+6xy+9y^2-12\)
f) \(x^2+2x-4y^2-4y\)
g) \(xy-4+2x-2y\)
\(2x^2-4x\)
\(3x^3+6x^2+3x\)
\(10x\left(x-y\right)-6x\left(y-x\right)\)
\(\left(x+1\right)^2-25\)
\(x^2+3x-y^2+3y\)
\(3x^2+5y-3xy-5x\)
\(x^2-7x-y^2+7y\)
\(3y^2-3z^2+3x^2\)
Rút gọn rồi tính giá trị của biểu thức:
a/ \(A=\left(7x+5\right)^2+\left(3x+5\right)^2-\left(10-6x\right)\left(5+7x\right)\) tại \(x=-2\)
b/ \(B=\left(2x+y\right)\left(y^2+4x^2-2xy\right)-8x\left(x-1\right)\left(x+1\right)\) tại \(x=-2\) và \(y=3\)
Phân tích thành nhân tử:
a) left(3x-1right)^2-left(5x+3right)^2
b) left(2x-y+4zright)^2-left(x+y-zright)^2
c) left(x^2+xyright)^2-left(x^2-xy-2y^2right)
d) x^4-x^2-2x-1
e) x^2+25+10x-y^2-2y-1
f) x^2+4y-4xy-z^2+6z-9
g) x^2-3zleft(3z-2right)-12xy-1+36y^2
h) 4a^2b^2-left(a^2+b^2-c^2right)
l) x^3+3x^2-9x-27
i) x^{m+4}+x^{m+3}-x-1
Đọc tiếp
Phân tích thành nhân tử:
a) \(\left(3x-1\right)^2-\left(5x+3\right)^2\)
b) \(\left(2x-y+4z\right)^2-\left(x+y-z\right)^2\)
c) \(\left(x^2+xy\right)^2-\left(x^2-xy-2y^2\right)\)
d) \(x^4-x^2-2x-1\)
e) \(x^2+25+10x-y^2-2y-1\)
f) \(x^2+4y-4xy-z^2+6z-9\)
g) \(x^2-3z\left(3z-2\right)-12xy-1+36y^2\)
h) \(4a^2b^2-\left(a^2+b^2-c^2\right)\)
l) \(x^3+3x^2-9x-27\)
i) \(x^{m+4}+x^{m+3}-x-1\)
Bài 1: Phân tích đa thức thành nhân tử:
a) 2xleft(x+1right)+2left(x+1right)
b) y^2left(x^2+yright)-zx^2-zy
c) 4xleft(x-2yright)+8yleft(2y-xright)
d) 3xleft(x+1right)^2-5x^2left(x+1right)+7left(x+1right)
e) x^2-6xy+9y^2
f) x^3+6x^2y+12xy^2+8y^3
g) x^3-64
h) 125x^3+y^6
k) 0,125left(a+1right)^3-1
t) x^2-2xy+y^2-xz+yz
q) x^2-y^2-x+y
p) a^3x-ab+b-x
đ) 3x^2left(a+b+cright)+36xyleft(a+b+cright)+108y^2left(a+b+cright)
l) x^2-x-6
i) x^4+4x^2-5
m) x^3-19x-30
j) x^4+x+1
y) ableft(a-bright...
Đọc tiếp
Bài 1: Phân tích đa thức thành nhân tử:
a) \(2x\left(x+1\right)+2\left(x+1\right)\)
b) \(y^2\left(x^2+y\right)-zx^2-zy\)
c) \(4x\left(x-2y\right)+8y\left(2y-x\right)\)
d) \(3x\left(x+1\right)^2-5x^2\left(x+1\right)+7\left(x+1\right)\)
e) \(x^2-6xy+9y^2\)
f) \(x^3+6x^2y+12xy^2+8y^3\)
g) \(x^3-64\)
h) \(125x^3+y^6\)
k) \(0,125\left(a+1\right)^3-1\)
t) \(x^2-2xy+y^2-xz+yz\)
q) \(x^2-y^2-x+y\)
p) \(a^3x-ab+b-x\)
đ) \(3x^2\left(a+b+c\right)+36xy\left(a+b+c\right)+108y^2\left(a+b+c\right)\)
l) \(x^2-x-6\)
i) \(x^4+4x^2-5\)
m) \(x^3-19x-30\)
j) \(x^4+x+1\)
y) \(ab\left(a-b\right)+bc\left(b-c\right)+ca\left(c-a\right)\)
o) \(\left(a+b+c\right)^3-a^3-b^3-c^3\)
ê) \(4a^2b^2-\left(a^2+b^2+c^2\right)^2\)
w) \(\left(1+x^2\right)^2-4x\left(1-x^2\right)\)
z) \(\left(x^2-8\right)^2+36\)
u) \(81x^4+4\)
Bài 2 : Tìm x
a)\(\left(2x-1\right)^2-25=0\)
b) \(8x^3-50x=0\)
c) \(\left(x-2\right)\left(x^2+2+7\right)+2\left(x^2-4\right)-5\left(x-2\right)=0\)
d) \(3x\left(x-1\right)+x-1=0\)
e) \(2\left(x+3\right)-x^2-3x\) =0
f) \(4x^2-25-\left(2x-5\right)\left(2x+7\right)=0\)
g) \(x^3+27+\left(x+3\right)\left(x-9\right)=0\)
1. x^2-y^2-2x+2y 2. x^3-x+3x^2y+3xy^2+y^3-y. 3. 4x^4y^4+1. 4. x^2-2x-4y^2-4y. 5.x^3-x^2-x+1. 6.x^2y-x^3-9y+9x. 7.x^3-2x^2+x-xy^2. 8.x^2-2x-4y^2-4y.