Answer:
Simplify both sides of the equation to get a^2 + 2ab + b^2 - c^2 = 2ab. Then subtract 2ab and add c^2 to both sides of the equation
Explanation:
(a+b)^2 - c^2 = 4(1/2 ab)
Simplify both sides
a^2 + 2ab + b^2 - c^2 = 2ab
Subtract 2ab and add c^2 to both sides
a^2 + 2ab + b^2 - c^2 - 2ab + c^2 = 2ab - 2ab + c^2
a^2 + b^2 = c^2
Answer is the second option
Simplify both sides of the equation to get a^2 + 2ab + b^2 - c^2 = 2ab. Then subtract 2ab and add c^2 to both sides of the equation