Does there exist a quadratic equation whose coefficients are all distinct irrationals but both the roots are rationals? Why?
Does there exist a quadratic equation whose coefficients are rational but both of its roots are irrational? Justify your answer.
A quadratic equation with integral coefficient has integral roots. Justify your answer.
Write whether the statement are true or false. Justify your answer.
If the coefficient of x2 and the constant term have the same sign and if the coefficient of x term is zero, then the quadratic equation has no real roots.
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If the coefficient of x2 and the constant term of a quadratic equation have opposite signs, then the quadratic equation has real roots.
Write whether the statement are true or false. Justify your answer.
Every quadratic equations has at most two roots.
Write whether the statement are true or false. Justify your answer.
Every quadratic equation has at least two roots.
Write whether the statement are true or false. Justify your answer.
Every quadratic equation has at least one real root.
Write whether the statement are true or false. Justify your answer.
Every quadratic equation has at least one real root.