Question

А^2+8а+16 а -------------- * --------- при а=2,4 НАЙДИТЕ ЗНАЧЕНИЕ выраж. а^2-4а а+4

Answer 1

Не совсем понятно что надо найти но это квадратное уравнение решается так

Answer 2

To find the value of the expression (a^2 + 8a + 16) * (a^2 - 4a + 4) when a = 2 and a = 4, we need to substitute the values of a into the expression and calculate the result.

First, let's simplify the expression:

(a^2 + 8a + 16) * (a^2 - 4a + 4)

Using the formula for a perfect square trinomial: (a + b)^2 = a^2 + 2ab + b^2, we can see that the first part of the expression (a^2 + 8a + 16) is a perfect square trinomial, which can be factored as (a + 4)^2.

So, the expression becomes:

(a + 4)^2 * (a^2 - 4a + 4)

Now, we can substitute a = 2 and a = 4 to find the values:

1. For a = 2: (2 + 4)^2 * (2^2 - 4*2 + 4) = 6^2 * (4 - 8 + 4) = 36 * 0 = 0

2. For a = 4: (4 + 4)^2 * (4^2 - 4*4 + 4) = 8^2 * (16 - 16 + 4) = 64 * 4 = 256

So, when a = 2, the value of the expression is 0, and when a = 4, the value of the expression is 256.