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1 vote
1 vote
Please help me with this fast
(5 + x)² = ?


User IvanPavliuk
by
2.7k points

2 Answers

19 votes
19 votes

Solution:


(5 + x)\² \\\\ \rightarrow (5 + x)(5 + x) \\\\ \rightarrow (5 * 5) + (5 * x) + (5 * x) + (x * x) \\\\ \rightarrow 25 + 5x + 5x + x^(2) \\\\ \rightarrow \bold{25 + 10x + x^(2) }

User Christoph Neumann
by
2.8k points
9 votes
9 votes

Answer:

x² + 10x + 25

Step-by-step explanation:


\hookrightarrow (5 + x)²

use the formula: (a+b)² = a² + 2ab + b²


\hookrightarrow x² + 2(5)(x) + (5)²


\hookrightarrow x² + 10x + 25

User CyanAngel
by
3.1k points