a2 – 2ab + b2 = ……………… A) (a – b)2 B) (a + b)2C) a2

1.	a2 – 2ab + b2 = ……………… A) (a – b)2 B) (a + b)2C) a2 – b2 D) (a + b) (a – b)
Answer» Correct option is A) (a – b)² Correct option is (A) (a – b)² \(a^2–2ab+b^2\) \(=a^2–ab-ab+b^2\) = a(a-b) - b(a-b) = (a-b) (a-b) = \((a-b)^2\)

a2 – 2ab + b2 = ……………… A) (a – b)2 B) (a + b)2C) a2 – b2 D) (a + b) (a – b)

Answer»

Correct option is A) (a – b)²

Correct option is (A) (a – b)²

\(a^2–2ab+b^2\) \(=a^2–ab-ab+b^2\)

= a(a-b) - b(a-b)

= (a-b) (a-b)

= \((a-b)^2\)