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Q: Factor completely: 9X4 – 81X2
A: 9x^4 – 81x^2 = 9x^2(x^2 - 9) = 9x^2(x + 3)(x - 3)
Original conversation
User: Factor completely: 9X4 – 81X2

Weegy: 9X4 ? 81X2 = -126
MoStWaNteD|Points 2661|

Question
Updated 1/4/2015 12:52:01 AM
This conversation has been flagged as incorrect.
Rating
3
Their common factor is 9x^2

Factoring it out, we will get this:
9x^2[(x^2)-9]
This answer has been flagged as incorrect.
Flagged by yeswey [1/4/2015 12:51:32 AM]
3
9x^4 – 81x^2
= 9x^2(x^2 - 9)
= 9x^2(x + 3)(x - 3)
Confirmed by sujaysen [1/4/2015 2:26:23 PM]

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