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

asked Nov 22, 2018 179k views

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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

Skan answered Nov 23, 2018

by Skan

8.6k points

0 votes

Answer:

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

Explanation:

Stuart Casarotto answered Nov 27, 2018

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