Evaluate the following when a = 4 and b = 7 : (a + b)^2 - (a^2 + b^2) + (ab).
are you looking for the answer because if so that equation would = 84
(a + b)^2 = a^2 + 2ab + b^2
So
a^2 + 2ab + b^2 - ( a^2 + b^2) + (ab) =
2ab + ab =
3ab =
3 ^ 4 * 7 =
84
+69 
