Through some clever algebra, we can combine our first two equations using the fact that
We have the a² and the b² in the equation , and we almost have a 2ab in the equation . To get that 2ab, we can simply double both sides of the first equation to get . From there, we’ll add the first two equations together, giving us the summed equation
Answer:
99
Step-by-step explanation:
Through some clever algebra, we can combine our first two equations using the fact that
We have the a² and the b² in the equation
, and we almost have a 2ab in the equation 
. To get that 2ab, we can simply double both sides of the first equation to get 
. From there, we’ll add the first two equations together, giving us the summed equation
And since
, we can equivalently say that