plz give me mcq worksheet of quadratic equations with ans
Answers
Answer:
. If one of the root of a quadratic equation with rational coefficients is rational, then other root must be
(a) Imaginary
(b) Irrational
(c) Rational
(d) None of these
2. If two roots of quadratic equation ax2 + bx + c = 0 are a, b, then the roots of the quadratic equation ax2 – bx + c = 0 are given by
(a)
(b) –a, –b
(c)
(d) None of these
3. In the quadratic equation (2a – 3)x2 + ax + a – 5 = 0, the value of a can never be
(a) 3/2
(b) 0
(c) 5
(d) None of these
4. The quadratic equation whose roots are –2 and 4 is given by
(a) x2 – 2x – 8 = 0
(b) x2 – 2x + 8 = 0
(c) x2 + 2x + 8 = 0
(d) None of these
5. If p, q be two positive numbers, then the number of real roots of quadratic equation px2 + q|x| + 5 = 0 is
(a) 1
(b) 0
© 2
(d) 4
6. If p and q are roots of the quadratic equation x2 + mx + m2 + a = 0, then the value of p2 + q2 + pq is
(a) 0
(b) a
(c) –a
(d) ± m2
7. The number of real roots of the equation |x|2 – 3|x| + 2 = 0 is
(a) 4
(b) 3
(c) 2
(d) 1
8. The diagram shows the graph of y = ax2 + bx + c, then
(a) a > 0
(b) b < 0
(c) c > 0
(d) b2 – 4ac = 0
9. The equation whose roots are 1 and 0, is
(a) x2 – 2x + 1 = 0
(b) x2 – 1= 0
(c) x2– x = 0
(d) None of these
10. One root of px2 – 14x + 8 = 0 is six times the other then p is
(a) 0
(b) 3
(c) 1/3
(d) 1
11. Roots of the equation (x – a)(x – b) = h2 are
(a) Real and equal
(b) Real and unequal
(c) Imaginary
(d) None of these