Question

Which of the following has x=2 as zero polynomial
a) x^2+3x+1
b) x^2-2x
c) x-1
d) x+1​

Answer 1

Answer:

Option b) x² -2x is a zero polynomial for x=2

Step-by-step explanation:

Given : for x = 2,  which polynomial is zero

Solution : a) x² + 3x +1 = 2²+3x2+1

                                    = 4 +6+1

                                     = 11

               b) x² - 2x = 2² - 2x2

                               = 4-4

                               = 0

               c) x - 1 = 2-1

                          = 1

               d) x +1 = 2+1

                          = 3

So option b) the value of x²-2x  is zero for x=2. It is zero polynomial