Question

А) x = √5 + 2, y = √5 - 2

Answer 1

Пошаговое объяснение:

x-y=4

x+y=2√5

xy=5-4=1

Answer 2

Let's perform some calculations using the given values of x and y:

Given: x = √5 + 2 y = √5 - 2

We can work with these expressions to find their values:

Step 1: Calculate x

x = √5 + 2

Step 2: Simplify √5

√5 is the square root of 5, which is approximately 2.2361 (rounded to four decimal places).

Step 3: Substitute the value of √5 into the expression for x

x ≈ 2.2361 + 2

Step 4: Add the two values to get the final value of x

x ≈ 4.2361

So, the value of x is approximately 4.2361 (rounded to four decimal places).

Now, let's calculate y:

Step 1: Calculate y

y = √5 - 2

Step 2: Simplify √5

√5 is the square root of 5, which is approximately 2.2361 (rounded to four decimal places).

Step 3: Substitute the value of √5 into the expression for y

y ≈ 2.2361 - 2

Step 4: Subtract 2 from 2.2361 to get the final value of y

y ≈ 0.2361

So, the value of y is approximately 0.2361 (rounded to four decimal places).

To summarize: x ≈ 4.2361 y ≈ 0.2361