Question

Help me on letter b please

Answer 1

Answer: 2

Explanation:

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

`(√(5)-√(2) )(√(2)+√(5) )\\(√(5))^(2) -(√(2) )^(2)\\5-2=3`

Answer 2

Use the commutative property to reorder the terms.
Then, simplify the product.
Finally, subtract the numbers.
Your final answer is 3.