Which of the following is correct about the nature of the roots of x2−3x+2=0?
Two distinct real roots
Two equal real roots
No real roots
None of these
We have,
⇒x2−3x+2=0
⇒D=b2−4ac
⇒(−3)2−4×1×2>0
⇒1>0
Since, D>0 roots are distinct and real.
Nature of roots of x−2x−1=x+42x+2 is
Question 11. (x2+1)2−x2 = 0 has:
(a) four real roots
(b) two real roots
(c) no real roots
(d) one real roots
Find the discriminant of the quadratic equation 3x2–5x+2=0 and find the nature of their roots.
Question 8 The quadratic equation 2x2−√5x+1=0 has (A) two distinct real roots (B) two equal real roots (C) no real roots (D) more than 2 real roots