Question

If
√5−√3
√80+√48−√27−√45
= + √15 ,
(i) The simplest form of √80 + √48 − √27 − √45 is:
a) √5 − √3 b) √5 + √3 c) √3 − √5 d) −(√5 + √3)

Answer 1

Answer:

(b) √5+√3

Step-by-step explanation:

√80=√16×√5 =4√5

√48=√16×√3 =4√3

√27=√9×√3=3√3

√45=√9×√5=3√5

So, √80 + √48 - √27 - √45

=4√5 + 4√3 - 3√3 - 3√5

=√5 + √3.