Question

plzzz tell me the answer of this question....with explanation ​

Answer 1

Answer:

Step-by-step explanation:

( 6√3+√4) (6√-3√4)

=( 6√3)²-(√4)²

=108-16=92

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2.   ( 5+√7) (2+√5)

=10+5√5+2√7+√12

=10 + 2√3 + 5√5 + 2√7

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3. ( 5+√5) (5-√5)

=5²-(√5)²

=25-5

=20