Q1 of 58 Page 106

Check whether the following are quadratic equation:

x2 - 2x = ( - 2)(3 - x)

x2 - 2x = ( - 2)(3 - x)

LHS = x2 – 2x


RHS = ( - 2)(3 - x) = - 6 + 2x


∴ x2 - 2x = - 6 + 2x


Or x2 - 2x + 6 – 2x = 0


⇒ x2 + 6 which is of the form ax2 + bx + c = 0


∴ it is a quadratic equation.


More from this chapter

All 58 →
1

Check whether the following are quadratic equation:

(x + 1)2 = 2(x - 3)

 1

Check whether the following are quadratic equation:

(x - 2)(x + 1) = (x - 1) (x + 3)

 1

Check whether the following are quadratic equation:

(x - 3)(2x + 1) = x(x + 5)

 1

Check whether the following are quadratic equation:

(2x - 1) (x - 3) = (x + 5)(x - 1)