Q4 of 65 Page 4

Let us determine the value of ‘a’ for which the equation (a-2)x2 + 3x + 5=0 will not be a quadratic equation.

The given equation is (a-2)x2 + 3x + 5=0

We can see that the equation is of the form where a,b and c are real numbers.


So, for the equation not to be quadratic, a’ = 0


Therefore, in the equation


a’ = a-2


a’ = 0


a – 2 = 0


So, a = 2.


Therefore, the above equation will not be quadratic for a = 2.


More from this chapter

All 65 →
2

Which of the following equations can be written in the form of ax2 + bx + c = 0, where a, b, c are real numbers and a ≠ 0, let us write it.

i.


ii.


iii.


iv. (x - 2)2 = x2 – 4x + 4

3

Let us determine the power of the variable for which the equation x6 – x3 –2 = 0 will become a quadratic equation?

 4

If be expressed in the form of ax2 + bx + c = 0 (a ≠ 0), then let us determine the co-efficient of x.

 4

Let us express 3x2 + 7x + 23 = (x + 4) (x + 3) = 2 in the form of the quadratic equation ax2 + bx + c = 0 (a ≠ 0)