Q1 of 14 Page 1

The roots of the equation x2 – 3x – m(m + 3) = 0, where m is a constant, are

Roots of the quadratic equation is given by where quadratic equation is of form ax2 + bx + c = 0.


Substituting value of a = 1, b = – 3, c = – m(m + 3)






x = (m + 3), (-m)


Hence option B is correct.

More from this chapter

All 14 →
3

In figure 1, O is the centre of a circle, PQ is chord and PT is the tangent at P. If ∠POQ = 70ᵒ, then ∠TPQ is equal to


 4

In Figure 2, AB and AC are tangents to the circle with centre O such that ∠BAC = 40ᵒ. Then ∠BOC is equal to


 6

The radius (in cm) of the largest right circular cone that can be cut out from a cube of edge 4.2 cm is

 7

A tower stands vertically in the ground. From a point on the ground which is 25 m away from the foot of the tower, the angle of elevation of the top of the tower is found to be 45ᵒ. Then the height (in metres) of the tower is