9(2 a-b)²-4(2 a-b)-13
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(18a- 9b)^2-8a+4b-13
324a^2-81b^2-7a+4b-13 ans
Hope it helps
☺️☺️
324a^2-81b^2-7a+4b-13 ans
Hope it helps
☺️☺️
aviralpatil222:
so what will be final answer
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