Question

phân tích đa thứ sau thành nhân tử

a. 2x+2y                        e.5x^5(y^3+3y-13) - 4y(y^3+3y-13)- 2x(y^3+3y-13)

b. 5x+20y                     f.

c. 6xy-30y

d. x^3-4x^2+x

 

Answer 1

a)\(2x+2y\)

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

b)\(5x+20y\)

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

c)\(6xy-30y\)

\(=6y\left(x-5\right)\)

d)\(x^3-4x^2+x\)

\(=x\left(x^2-4x+1\right)\)

e)\(5x^5\left(y^3+3y-13\right)-4y\left(y^3+3y-13\right)-2x\left(y^3+3y-13\right)\)

\(=\left(5x^5-4y-2x\right)\left(y^3+3y-13\right)\)

 

 

Answer 2

a)2x+2y=2(x+y)

b)5x+20y=5(x+4y)

c)6xy-30y=6y(x-5)

d)x​³​-4x²+x

 

=x(x-4x+1)