Question

(a + b)²-4ab= (a-b)
²​

Answer 1

Step-by-step explanation:

(a + b)² = a^2 + b^2 + 2ab

(a + b)²-4ab = a^2 + b^2 + 2ab - 4ab

(a + b)²-4ab = a^2 + b^2 - 2ab

(a + b)²-4ab = (a-b)^2