Question 6 Is 0.2 a root of the equation x2 – 0.4 = 0? Justify your answer.
No, since 0.2 does not satisfy the quadratic equation i.e. (0.2)2 -0.4 = 0.04 – 0.4 ≠ 0.
Question 3 Does a quadratic equation with integral coefficient has integral roots. Justify your answer.