Question

I dont know the answer of this, help pls

Answer 1

22 + 2
`√(2)`

Explanation:

(4 +
`√(2)` )(6 -
`√(2)` )

each term in the second factor is multiplied by each term in the first factor.

4(6 -
`√(2)` ) +
`√(2)` (6 -
`√(2)` ) ← distribute both parenthesis

= 24 - 4
`√(2)` + 6
`√(2)` - 2 ← collect like terms

= 22 + 2
`√(2)`