A = 2√5 , b = 3√7

(a+b)² = a² + 2ab + b² = (2√5)² + 2(2√5)(3√7) + (3√7)²

= 4*5 + 12√35 + 9*7

= 83 + 12√35

(a+b)² = a² + 2ab + b² = (2√5)² + 2(2√5)(3√7) + (3√7)²

= 4*5 + 12√35 + 9*7

= 83 + 12√35

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Answered @ 09/01/2020 01:00 AM By answersmine

A = 2√5 , b = 3√7

(a+b)² = a² + 2ab + b² = (2√5)² + 2(2√5)(3√7) + (3√7)²

= 4*5 + 12√35 + 9*7

= 83 + 12√35

(a+b)² = a² + 2ab + b² = (2√5)² + 2(2√5)(3√7) + (3√7)²

= 4*5 + 12√35 + 9*7

= 83 + 12√35