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Questions

-α, -  β মূলদ্বয়বিশিষ্ট সমীকরণ নিচের কোনটি?
x2-(α+β)x+αβ=0
x2+(α+β)x+αβ=0
x2-(α+β)x-αβ=0
x2+(α+β)x-αβ=0
ANS : 2
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