49a^2-256b^4=(7a)^2-(16b^2)^2=(7a-16b^2)(7a+16b^2)
49a² - 256b⁴ = (7a)² - (16b²)² = (7a - 16b²)(7a + 16b²)
49a^2-256b^4=(7a)^2-(16b^2)^2=(7a-16b^2)(7a+16b^2)
49a² - 256b⁴ = (7a)² - (16b²)² = (7a - 16b²)(7a + 16b²)