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a² b² + 4 a² b - 6 a b² +9
& - 4 a² b²+ 2 a² b.
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Answer:
-2a²b²+6a⁴b⁴-6ab²+9
Step-by-step explanation:
=a²b²-4a²b²+4a²b+2a²b-6ab²+9
=-2a²b²+6a⁴b⁴-6ab²+9
Answered by
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