Question

Evaluate the following when a = 4 and b = 7 (a+b)^2 - (a^2 + b^2)

Answer 1

56

Explanation:

(4 + 7)² - (4² + 7²) = 11² - (16 + 49) = 121 - 65 = 56

Answer 2

56

Explanation:

(4+7)²-(4²+7²)=121-65

=56