Question

i cannot understand these questions, please explain

Answer 1

Answer:

your image is blur.................

Answer 2

Answer:

q(1) expand (5-x)^2 using the identity (a-b)^2=a²-2ab+b²

      you get it as 25-10x+x^2

        the number which is next to the variable is the coefficient

         in this case coefficient of x^2 is 1.

q(2) in both subdivisions (a) and (b) you have to substitute value of x in the      

          respective polynomials and then you get the value of them.

q(3) same as above question