Question

Factor this expression completely and then place the factors in the proper location on the grid. 9a^4 - b 2

Answer 1

9a^4 - b^2
= (3a^2)^2 - b^2
= (3a^2 + b)(3a^2 - b) ................using a^2 - b^2 = (a+b)(a-b)

hope it helps

Answer 2

(3a^2 + b)(3a^2 - b)

Explanation: