a) \(2x^3+x^2-4x-12\)
\(=2x^3-4x^2+5x^2-10x+6x-12\)
\(=2x^2\left(x-2\right)+5x\left(x-2\right)+6\left(x-2\right)\)
\(=\left(x-2\right)\left(2x^2+5x+6\right)\)
b) \(5x^2+6xy+y^2\)
\(=5x^2+5xy+xy+y^2\)
\(=5x\left(x+y\right)+y\left(x+y\right)\)
\(=\left(x+y\right)\left(5x+y\right)\)
Phan tich da thuc thanh nhan tu
a,7x+7y
b,2x2y-6xy2
Phan tich da thuc thanh nhan tu
a) 3x2y - 6xy2
b) (2x - a) . x2 - (2x-a) . y
c) 25a2 - c2
d) 4 - 36x + 81x2
e) (x+7)2 -( 2x- 9)2
f) x2 - 6x +8
GIUP TUI VOI PLEASE <3 Tks
Phan tich thanh tu nhan tu
a)x^2-3x+2
b)8x^3-27+(x+1)×(3-2x)
phan tich cac da thuc sau thanh nhan tu theo mau:
2x^3-x
5x^2(x-1)-15x(x-1)
3x^2y^2+12x^2y-15x-y^2
3x(x-2y)+6y(2y-x)
4x^2-4x+1
phan tich da thuc thanh nhan tu chung
phan tich da thuc sau thanh nhan tu
2x(y-z)+(z-y)(x+t)
1) - Phan tich cac da thuc sau thanh nhan tu :
a) 14x2y2 - 21xy2 + 28x2y d) 2 phan 7 x(3y -1 )-2 phan 7y (3y-1)
b) x3 -3x2 + 3x- 1 e) (x+y)2-4x2
c) 27x2+1phan 8 f) (x+y)3-(x-y)3
2) tim x biet
a) x2(x+1)+2x(x+1)=0 b) x(3x-2)-5(2-3x)=0
c) 4 phan 9 -25x2=0 d) x2-x+phan4=0
3) tinh nhanh cac gia tri bieu thuc sau :
a) 17.91,5+170.0,85 b) 20162-162
c) x(x-10-y(1-x)tai x=2001va y = 2999
phan tich da thuc thanh nhan tu : \(a^6+a^4+a^2b^2+b^4-b^6\)
8x^3-12x^2+6x-1
phan tich da thuc thanh nhan tu chung
