11. Factors of 4a? + 9b? - 25 - 12 ab are
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Step-by-step explanation:
4a ^2 +9b^ 2-12ab -25
(2a)^2 +(3b)^2-(2x2ax3b)-25
+2a-3b)^2-25
(2a-3b)^2(-5)^2
(2a-3b-5) (2a-3b+5)
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