Question

what is the completely factored form of of this polynomial 81x^4 - 16y^4​

Answer 1

Step-by-step explanation:

81x⁴ - 16y⁴

(9x²)² - (4y²)²

(9x² + 4y²)(9x² - 4y²)

(9x² + 4y²)(3x + 2y)(3x - 2y)