Expand and simplify (x + 5) (x + 5)

the answer i believe is

x^2+10x+25

Method 1:

Use distributive property: (a + b) (c + d) = ac + ad + bc + bd

(x + 5) (x + 5) = (x) (x) + (x) (5) + (5) (x) + (5) (5) = x² + 5x + 5x + 25

= x² + 10x + 25

Method 2:

a · a = a², therefore (x + 5) (x + 5) = (x + 5) ².

Use (a + b) ² = a² + 2ab + b².

(x + 5) ² = x² + 2 (x) (5) + 5² = x² + 10x + 25