[tex] \orange{\boxed{ \boxed{\sf \large (x + 5) {}^{2}}}}[/tex]
Explicação passo-a-passo:
[tex] \sf x {}^{2} + 10x + 25 \\ \\ \sf x {}^{2} + 2 \times x \times 5 + 25 \\ \\ \sf x {}^{2} + 2 \times x \times 5 + 5 {}^{2} \\ \\ \\ \boxed{\large\sf (x + 5) {}^{2}}[/tex]