Question

Multiply and simplify if possible.

(3−√5)(7−√5)

Show steps

Answer 1

FOIL method:

(3−√5)(7−√5)

= 3(7) + 3(-√5) - √5(7) - √5(-√5)

= 21 - 3√5 - 7√5 + 5

Combine like terms:

= 26 - 10√5

Final answer:

(3−√5)(7−√5) = 26 - 10√5