Question

Simplify this expression HELP ASAP

Answer 1

B

Explanation:

Noting the following rule of radicals

`√(a)` ×
`√(b)` =
`√(ab)`

Given

(
`√(2)` +
`√(3)`)(
`√(5)` -
`√(7)` )

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

=
`√(2)`(
`√(5)` -
`√(7)`) +
`√(3)`(
`√(5)` -
`√(7)`) ← distribute parenthesis

=
`√(10)` -
`√(14)` +
`√(15)` -
`√(21)`