a (2a-3)=12 হলে- 

i. 4a2-14a2=313

ii. 2a + 12a2=13

iii. 4a2 + 14a2=11

নিচের কোনটি সঠিক?

Created: 9 months ago | Updated: 9 months ago
Updated: 9 months ago
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