Question

(корінь з 7 +1)(корінь з 3+5)=?

Answer 1

(√7+ 1)(√3 + 5)= √21 + 5√7 + √3 + 5

Answer 2

Calculation

To calculate the expression (корінь з 7 + 1)(корінь з 3 + 5), we need to find the square roots of 7 and 3, and then add 1 to the square root of 7 and 5 to the square root of 3. Finally, we multiply the two results together.

Let's break down the calculation step by step:

1. Find the square root of 7: корінь з 7. The square root of 7 is approximately 2.645751311.

2. Add 1 to the square root of 7: корінь з 7 + 1. The result is approximately 3.645751311.

3. Find the square root of 3: корінь з 3. The square root of 3 is approximately 1.732050808.

4. Add 5 to the square root of 3: корінь з 3 + 5. The result is approximately 6.732050808.

5. Multiply the two results together: (корінь з 7 + 1)(корінь з 3 + 5). The final result is approximately 24.52563505.

Therefore, (корінь з 7 + 1)(корінь з 3 + 5) ≈ 24.52563505.

Please note that the above calculation is an approximation and the actual result may have more decimal places.