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a. Square the first term

Ex: (5x+2)#2 <----- [exponent 2]

The first term here is the 5x :)

So the answer is 25 because you just have to multiply by itself

b. Twice the product of the term

Ex: (5x+2)#2 <---- [exponent 2]

Multiply 5x and 2 . So the answer will be 10x then twice the answer :)

So it will be 20x . Dont forget to add the variables (x)

c. Square the last term

Ex. (5x+2)#2 <------- [exponent 2 ]

The last term here is 2 . You just had to square it [ means multiply by itself ]

So the answer would be

25x#2+20x+4

Thanks :)