Question

bài 2 :mphaan tích các đa thúc thành nhân tử

a) 36-\(a^2\)

b)\(44a^2-44a+11\)

c)\(2a^3+3a^2+3a+1\)

Answer 1

a/ \(44a^2-44a+11\)

\(=11\left(4a^2-4a+1\right)\)

\(=11\left(2a-1\right)^2\)

Vậy...

b/ \(2a^3+3a^2+3a+1\)

\(=2a^3+a^2+2a^2+a+2a+1\)

\(=a^2\left(2a+1\right)+a\left(2a+1\right)+\left(2a+1\right)\)

\(=\left(2a+1\right)\left(a^2+a+1\right)\)

Vậy..

Answer 2

Bài giải

a, \(36-a^2=6^2-a^2=\left(6+a\right)\left(6-a\right)\)

b, \(44a^2-44a+11=11\cdot4a^2-11\cdot4a+1\cdot11=11\left(2a-1\right)^2\)

c, \(2a^3+3a^2+3a+1\)

\(=2a^3+2a^2+a+a^2+2a+1\)

\(=a\left(2a+1\right)+\left(2a+1\right)+a^2\left(2a+1\right)\)

\(=\left(a+a^2+1\right)\left(2a+1\right)\)