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Factor completely 4x2 − 81. (4x − 9)(x + 9) (2x + 9)(2x + 9) (2x + 9)(2x − 9) (2x − 9)(2x − 9
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4 votes
Factor completely 4x2 − 81.

(4x − 9)(x + 9)

(2x + 9)(2x + 9)

(2x + 9)(2x − 9)

(2x − 9)(2x − 9

User Mark Harrison
by
8.2k points

1 Answer

6 votes
(2x+9)
(2x-9)
4x2 +18x -81
-18x
---------------------------
4x2 + 0x - 81
4x2 - 81 √

so answer is (2x+9) (2x-9)
User Codar
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8.5k points
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