Question

Factorize the following polynomials
3(x + 2)2 - 5(x + 2) + 2

Answer 1

Answer:

Exercise– 2.1

1.  Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer.

Ans. (i)   4x2 – 3x + 7

               ⇒ 4x2 – 3x + 7x°

               ∵ All the exponents of x are whole numbers.

               ∴ 4x2 – 3x + 7 is a polynomial in one variable.

        (ii)    

                 

               ∵ All the exponents of y are whole numbers.

               ∴  is a polynomial in one variable.

         

         

        (v)   x10 + y3 + t50

               ∵; Exponent of every variable is a whole number,

               ∴ x10 + y3 + t50 is a polynomial in x, y and t, i.e. in three variables.

2.  Write the co-efficients of x2 in each of the following:

Step-by-step explanation:

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Answer 2

Answer:

Refer to the attachment