Question

25(2x+1)la patrat minus 16

Answer 1

$25( {2x + 1})^{2} - 16$

$= 25( {4x}^{2} + 4x + 1) - 16$

$= 100 {x}^{2} + 100x + 25- 16$

$= 100 {x}^{2} + 100x + 9$

$= 100x(x + 1) + 9$