Question

tell me its simplest form... step by step
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Answer 1

Step-by-step explanation:

question 1

(6√3)2 - (3√4)2 by (a+b) (a-b)=a square -b square

(36×3)-(9×4)

72

question 3

(5)2-(√5)2

25-5

20 (same indentity is use in question 3)

question 2

5(2+√5)+√7(2+√5)

10+5√5+2√7+√35