Question

(5 +√7) (2+√5) help​

Answer 1

Answer:

Step-by-step explanation:

Given  

(5 +√7) (2+√5) help

We need to multiply each term by the next term. So we get

5 x 2 + √7 x 2 + 5 x √5 + √7 x √5

So we can write it as  

10 + 2√7 + 5√5 + √35

In decimal form we get 32.387

Answer 2

Step-by-step explanation:

$(5 + \sqrt{7} )(2 + \sqrt{5} ) \\ = 5 \times 2 + 5 \times \sqrt{5} + \sqrt{7} \times 2 + \sqrt{7} \times \sqrt{5} \\ = 10 + 5 \sqrt{5} + 2 \sqrt{7} + \sqrt{35}$