Question

(2 корень из 5 - 3) (2корень из 5 +3)

Answer 1

$(2 \sqrt{5} - 3)(2 \sqrt{5} + 3) =$
$4 \times 5 - 9 = 20 - 9 = 11$
Ответ: 11

Answer 2

Все решение на листочке)

Ответ : 11

удачи :)

Answer 3

To simplify the expression, let's first recognize that it is a difference of squares. The expression can be written as follows:

(2√5 - 3)(2√5 + 3)

Now, we can apply the formula for the difference of squares, which states that:

(a - b)(a + b) = a^2 - b^2

In this case, a = 2√5 and b = 3, so the simplified expression is:

(2√5)^2 - 3^2

Now, calculate:

(2√5)^2 = (2√5) × (2√5) = 4 × 5 = 20 3^2 = 3 × 3 = 9

Now, subtract:

20 - 9 = 11

So the simplified expression is 11.