Question

(a+5)²+(a-5)*(a+5)+12a=​

Answer 1

(a + 5)² + (a - 5) • (a + 5) + 12a = a² + 10a + 25 + a² - 25 + 12a = 2a² + 22a

Answer 2

Ответ:

2а²+22а

Объяснение:

(a+5)²+(a-5)*(a+5)+12a=​а²+10а+25+а²-25+12а(складываем подобные)=2а²+22а

Answer 3

Let's simplify the given expression step by step:

1. Expand (a+5)²: (a+5)² = a² + 10a + 25

2. Expand (a-5)(a+5): (a-5)(a+5) = a² + 5a - 5a - 25 = a² - 25

3. Combine the terms: (a+5)² + (a-5)*(a+5) = (a² + 10a + 25) + (a² - 25) = 2a² + 10a

4. Add 12a: 2a² + 10a + 12a = 2a² + 22a

So, the simplified expression is: 2a² + 22a