Question

Is 0.3 a root of the equation x^2-0.9 = 0? Justify.

Answer 1

no 0.3 is not a zero of given polynomial.

Answer 2

0.3 is not a root of the equation $x^2-0.9 = 0.$

Step-by-step explanation:

Let the given quadratic polynomial:

P(x): $x^{2} -0.9$ = 0      ....(1)

To, justify 0.3 is a root of the equation or not.

Pux x = 0.3 in equation (1), we get

P(0.3): $0.3^{2} -0.9$

P(3) = 0.09 - 0.9 = - 0.81 ≠ 0

Hence, 0.3 is not a root of the equation $x^2-0.9 = 0$.