Question 2 (ii) Write whether the given statement is true or false. Justify your answer. Every quadratic equation has at least one real roots.
False, for example x2 + 4 = 0 has no real root.
Question 2 (iii) Write whether the given statement is true or false. Justify your answer. Every quadratic equation has at least two roots.
Question 2 (v) Write whether the given statement is true or false. Justify your answer. If the coefficient of x2 and the constant term of a quadratic equation have opposite signs, then the quadratic equation has real roots.