Question

Which of the following expressions are Polynomials in one variable:

a. ax2 + bx + c
b.2x3 – 5x + 6
c. x – 1/x
d.4x4 + 3x

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Answer 1

Answer:

the answers are three=a,b&c=ax2+bx+c&4x4+3x&2x3-5x+6

in ax2+bx+c a,b,c are digits as u hve earlier read in the polynomial chapter

the basic rule of the chapter is if the power of the variable is in negative or fraction the equation is not a polynomial and as in the third option we have x-1/x if we solve it we got

x-x^-1 and that's not polynomial

Hope it will help u

Answer 2

HEYA!!

$a{x}^{2} + bx + c \: (no)</strong><strong> </strong><strong> </strong><strong>\\ 2 {x}^{3} - 5x + 6(yes) \\ x - \frac{1}{x} (yes) \\ 4 {x}^{4} + 3x \: (yes)$

equation 1 have 4 variable and

all rest of three equations have only one variable x .