Question

check whether x=3 is a zero of polynomial x^2 -3x + x - 3​

Answer 1

Step-by-step explanation:

put x=3 in given equation

x²-2x-3

9-6-3

0

yes it is zero of quadratic

thank you

Answer 2

Given:-

${x}^{2} - 3x + x - 3$

To check:-

x = 3 is a zero of polynomial

Solution:-

If, x=3 is the zero of polynomial the it must satisfies p(x) = 0

By putting the value of "x" in given p(x).

$= {x}^{2} - 2x - 3$

$= {3}^{2} - 2 \times 3 - 3$

$= 9 - 6 - 3$

$= 9 - 9$

$= 0$

hence, x= 3 satisfies the given p(x) =0.

therefore, x = 3 is the zero of polynomial ${x}^{2} - 2x - 3$