Answer:
x² + 10x + 25
explanation:
[tex]\hookrightarrow[/tex] (5 + x)²
use the formula: (a+b)² = a² + 2ab + b²
[tex]\hookrightarrow[/tex] x² + 2(5)(x) + (5)²
[tex]\hookrightarrow[/tex] x² + 10x + 25
Solution:
[tex](5 + x)\² \\\\ \rightarrow (5 + x)(5 + x) \\\\ \rightarrow (5 \times 5) + (5 \times x) + (5 \times x) + (x \times x) \\\\ \rightarrow 25 + 5x + 5x + x^{2} \\\\ \rightarrow \bold{25 + 10x + x^{2} }[/tex]
