Question

please help me solving​

Answer 1

Answer:

30 - 11√10 is the answer

Step-by-step explanation:

(3√5 - 5√2)(4√5 + 3√2)

3√5(4√5) + 3√5(3√2) - 5√2(4√5) - 5√2(3√2)

( remember: √5 x √5 = 5 or √5 x √2 = √10)

12(5)  + 9√10 - 20√10  - 15(2)

60 - 11√10 - 30

30 - 11√10

Answer 2

see the above....

pls mark as brilliant...