Question

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Answer 1

Answer:

(4√5+3√7)²

(a+b)²= a²+ 2ab+ b²

(4√5+3√7)²=(4√5)²+ 2×(4√5)×(3√7)+ (3√7)²

=16×5+24√35+9×7

=30+24√35+63

=117√35