Answer to Polynomial Expressions in Algebra

 Answers to Polynomial Expressions in Algebra

Q 1.   Identify Terms, Coefficients and Degree of polynomials.

Answer:       i.        Terms:

                             a2  +   2a   -   5

                             a2 ,

                             2a   and

                             5           

                   ii.       Coefficients:

                             a2  +   2a   -   5

                             in 2a,  coefficient is  2.

                   iii.      Degree:

                             a2  +   2a   -   5

                             in a2 Degree is 2.

         

Q. 2.  Find out the Term, Coefficient and Degree of following polynomial.

 

i.                   7a2   +   a     -    5  

ii.                 2x3   -  2x2  +   x     +    2  

iii.              3z4   +   z3     -    5z2    +   z    -    6  

iv.               y2   +   y     -    7  

 

i.                   Term                7a2 ,   a,    5

Coefficient       in 7a27 is coefficient.

Degree              7a2 ,      2 is degree

 

ii.                 Term                2x3 ,  2x2 ,     x,    2

Coefficient:      in 2x3, 2,  and in 2x22 is coefficient.

Degree:             2x3 ,       3 is degree

 

iii.              Terms               3z4 ,  z3 ,    5z2,    z,    6  

Coefficient:      in 3z4, 3  and in 5z25 is coefficient.

Degree:             3x4 ,       4 is degree

 

iv.               Term                y2,   y,  7

Coefficient:      No coefficient in this expression.

Degree              y2   2 is degree 


Q.3    Degree 3.

Q 4.    No, fractional exponent

Q 5.    Binomial A polynomial with two terms.

Q 6.    Monomial. A polynomial with one term.  Degree 4

Q 7.    2x + 3x − x.

        = 5x – x

        = 4x


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