9th Class Punjab Board Exams Quizzes MCQs Quizzes Punjab Maths Online 9th Class Test Lesson 3 Logarithms

Question:
a² + b² is equal to:

Option A):
(a - b)² + 2ab
Option B):
(a + b)² + 2ab
Option C):
(a + b)² - 2ab
Option D):
(a - b)² - 2ab

Correct Answer is Option C):
(a + b)² - 2ab