Question

 Phân tích đa thức thành nhân tử: 
2021x²+5x-2016

Answer 1

\(2021x^2+5x-2016\)

\(=2021x^2+2021x-2016x-2016\)

\(=\left(x+1\right)\left(2021x-2016\right)\)

Answer 2

2021x²+5x-2016

=2021x²+2021x-2016x-2016

=2021x(x+1)-2016(x+1)

=(2021x-2016)(x+1)

 

Answer 3

\(2021x^2+5x-2016\)

\(=2021x^2+2021x-2016x-2016\)

\(=\left(2021x^2+2021\right)-\left(2016x+2016\right)\)

\(=2021x\left(x+1\right)-2016\left(x+1\right)\)

\(=\left(2021x-2016\right)\left(x+1\right)\)

Answer 4

2021x²+5x-2016

=2021x²+2021x-2016x-2016

=2021x(x+1)-2016(x+1)

=(2021x-2016)(x+1)