Question

Expand and simplify
(2x + 5)^2

Answer 1

Answer:  4x^2 + 10x + 25

Step-by-step explanation:

(2x+5)^2 = (2x)^2 + 2(2x * 5) + 5^2

= 4x^2 + 10x + 25

Answer 2

Answer:

${ \tt{ {(2x + 5)}^{2} }}$

» split the bracket to remove the power or the index:

$= { \tt{(2x + 5)(2x + 5)}}$

» Use distributive property to open the brackets:

$= { \tt{(4 {x}^{2} + 10x + 10x + 25)}} \\ = { \tt{( {4x}^{2} + 20x + 25) }}$