Question

Phân tích các đa thức sau thành phân tử

a)(x+1)²+x+1   b)4x(2y-z)+2y(z-2y)

c)4(x+y)-2x(x+y)

 

Answer 1

a: =(x+1)(x+1+1)

=(x+1)(x+2)

b: \(=4x\left(2y-z\right)-2y\left(2y-z\right)\)

\(=2\left(2y-z\right)\left(2x-y\right)\)

c: =(x+y)(4-2x)

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

Answer 2

`a,(x+1)^2 +x+1`

`=(x+1)^2 + (x+1)`

`=(x+1)(x+1+1)`

`=(x+1)(x+2)`

`b,4x(2y-z)+2y(z-2y)`

`=4x(2y-z)-2y(2y-z)`

`=(4x-2y)(2y-z)`

`=2(2x-y)(2y-z)`

`c, 4(x+y)-2x(x+y)`

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

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

Answer 3

Tham khảo:>

a.(x + 1)^2 + x + 1

=(x + 1)^2 + (x + 1)

=(x + 1)(x + 1 + 1)

=(x + 1)(x + 2)

b.4x (2y − z) + 2y(z − 2y)

=4x (2y − z) − 2y(2y − z)

= 2(2x - y)(2y - z)

c. 4(x + y) - 2x (x + y)

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

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

,4(x+y)−2x(x+y)