Expanding each of these expressions gives:
(a-3)² = a² - 6a + 9(2y+5)² = 4y² + 20y + 25(4a-b)(4a+b) = 16a² - b²(x²+1)(x²-1) = x^4 - 1
Therefore, the expanded expression is:
(a² - 6a + 9)(4y² + 20y + 25)(16a² - b²)(x^4 - 1)
Expanding each of these expressions gives:
(a-3)² = a² - 6a + 9
(2y+5)² = 4y² + 20y + 25
(4a-b)(4a+b) = 16a² - b²
(x²+1)(x²-1) = x^4 - 1
Therefore, the expanded expression is:
(a² - 6a + 9)(4y² + 20y + 25)(16a² - b²)(x^4 - 1)