Question

Phân tích đa thức sau thành phân tử :

A, 5x mũ2 + 10xy-(4x+8y)

B, x mũ2 - 2xy+y mũ2 - 4

C, x mũ2 - x

Mình đang cần bài gấp, mọi người giúp mình với, mình cảm ơn mọi người nhiều ak

Answer 1

a) \(5x^2+10xy-\left(4x+8y\right)\)

\(=5x\left(x+2y\right)-4\left(x+2y\right)=\left(x+2y\right)\left(5x-4\right)\)

b) \(x^2-2xy+y^2-4\)

\(=\left(x-y\right)^2-2^2=\left(x-y-2\right)\left(x-y+2\right)\)

c) \(x^2-x\)

\(=x\left(x-1\right)\)

Answer 2

5x^2 + 10xy - ( 4x + 8y )

= 5x ( x + 2y ) - 4 ( x + 2y )

= ( x + 2y ) ( 5x - 4 )

x^2 - 2xy + y^2 - 4

= ( x - y )^2 - 4

= ( x - y ) ^2 - 2^2

=( x - y - 2 ) ( x - y + 2 )

x^2 - x

= x ( x - 1 )

Answer 3

a 5x^2 + 10xy - ( 4x + 8y )

= 5x ( x +2y ) - 4 ( x + 2y )

= ( x + 2y ) ( 5x - 4 )

b x^2 - 2xy + y^2 - 4

= ( x - y ) ^2 - 2^2

= ( x - y - 2 ) ( x - y + 2 )

c x^2 - x

= x ( x - 1 )

Answer 4

5x^2 + 10xy - ( 4x + 8y )

= 5x ( x + 2y ) - 4 ( x + 2y )

= ( x + 2y ) ( 5x - 4 )

x^2 - 2xy + y^2 - 4

= ( x - y )^2 - 2^2

= ( x - y - 2 ) ( x - y + 2 )

x^2 - x

= x ( x - 1 )

Answer 5

https://i.imgur.com/qGt9lGI.jpg

Answer 6

https://i.imgur.com/yCFdGFU.jpg

Answer 7

https://i.imgur.com/34WGV3p.jpg

Answer 8

https://i.imgur.com/c00IglS.jpg

Answer 9

5x^2 + 10xy - ( 4x + 8y )

= 5x ( x + 2y ) - 4 ( x + 2y )

= ( x + 2y ) ( 5x - 4 )

x^2 - 2xy + y^2 - 4

= ( x - y )^ 2 - 2^2

= ( x - y - 2 ) ( x - y + 2 )

x^2 - x

= x ( x - 1 )

Answer 10

a) 5x²+10xy-(4x+8y)

=5x(x+2y) - 4(x+2y)

=(x+2y) (5x-4)

b). x²-2xy+y²-4

=(x-y)²-4

=(x-y-2) (x-y+2)

c) x²-x

=x(x-1)

Answer 11

a) 5x² + 10xy - (4x + 8y)

=5x (x + 2y) - 4 ( x + 2y)

=(x + 2y) (5x - 4)

b). x² - 2xy + y² - 4

= ( x - y)² - 4

= ( x - y - 4 ) ( x - y + 4 )

c). x² - x

= x ( x - 1)

Answer 12

nhân tử chứ bạn??

a, 5x²+10xy-4x-8y=(5x²-4x)+(10xy-8y)=x(5x-4)+2y(5x-4)=(x+2)(5x-4)

b,x²-2xy+y²-4=(x-y)²-4=(x-y-2)(x-y+2)

c,x²-x=x(x-1)