Question

Phan tich da thuc thanh nhan tu

\(\left(8x+3\right)^2-25x^2\)

 

 

Answer 1

         \(\left(8x+3\right)^2-25x^2=\left(8x+3\right)^2-\left(5x\right)^2=\left(8x+3+5x\right)\left(8x+3-5x\right)=\left(13x+3\right)\left(3x+3\right)\)

Answer 2

= (8x +3 - 5x).(8x +3  +5x)   =(3x+3).(13x+3)   

Answer 3

\(\left(8x+3\right)^2-25x^2\)

\(=\left(8x+3\right)^2-\left(5x\right)^2\)

\(=\left(8x+3-5x\right)\left(8x+3+5x\right)\)

\(=\left(3x+3\right)\left(13x+3\right)\)