Question

In the expansion of (2a-56)2, the co_efficient of ab is

Answer 1

Answer:

first of all question is wrong we will not get the ab terms only only the a term will he getting and the co efficient of a term is 4

Step-by-step explanation:

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Answer 2

Answer:

(2a+5b) ²

4a²+ 20ab+ 25b²

co efficient of ab = 20

Step-by-step explanation:

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