Question

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

Answer 1

Answer:

56

Step-by-step explanation:

(4+7)²-(4²+7²)=121-65

                     =56

Answer 2

Answer:

56

Step-by-step explanation:

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