Question

(2a-b)(2a+b)(4a^2+b^2) from identities

Answer 1

[(2a-b)(2a+b)][(4a²+b²)]

[(2a)²-(b)²][(4a²+b²)].......................[(x-y)(x+y)] = [x²-y²]........[here x=2a, y=b]

[(4a²-b²)][(4a²+b²)]

[(4a²)² - (b²)²].......................[(x-y)(x+y)] = [x²-y²]........[here x=4a², y=b²]

16a^4 - b^4