Question

please answer my question​

Answer 1

by rationalising the denominator and solve it

Answer 2

Answer:

1

Step-by-step explanation:

7+3√5         7-3V5

------------   +  -------------    =

3+√5             3-√5

according to lcm thse numbers will become {(a+b)(a-b)}=a^2-b^2

both up and down these are rationalised

so...

7^2-(3V5)^2           49-45                   4

-------------------    = ----------------  =      -------------     =1

3^2 - (√5)^2            9-5                        4