Question

(2a+3)²=??????????? ​

Answer 1

Ответ:

(2a)^2 + 2*2a*3 + 3^2 = (2a)^2 + 12a + 9

Answer 2

Ответ:

Объяснение:

(2a + 3)² = (2a)² + 2 · 2a · 3 + 3² = 4a² + 12a + 9

Для решения использовали следующую формулу:

(a + b)² = a² + 2ab + b²

Answer 3

To square the expression (2a + 3), you need to multiply it by itself:

(2a + 3)² = (2a + 3) * (2a + 3)

To expand this, you can use the FOIL method (First, Outer, Inner, Last):

(2a + 3) * (2a + 3) = 2a * 2a + 2a * 3 + 3 * 2a + 3 * 3

Now, simplify each term:

= 4a² + 6a + 6a + 9

Combine like terms:

= 4a² + 12a + 9

So, (2a + 3)² is equal to 4a² + 12a + 9.