Question

Express (x+5)^2 as a trinomial in standard form.

Answer 1

x² + 10x + 25

Explanation:

(x + 5)(x + 5)

using FOIL method

First x•x = x²

Outside x•5 = 5x

Inside 5•x = 5x

Last 5•5 = 25

add like terms together.

Answer 2

x^2 + 25 + 10x

= x^2 + 10x + 25

Explanation:

( x + 5 )^2

Formula : -

( a + b )^2 = a^2 + b^2 + 2ab

Here,

a = x

b = 5

( x + 5 )^2

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

= x^2 + 25 + 10x