Question

To decide whether 1 is a root of quadratic equation X2 + 4x -5 = 0 or not complete the following activity.


Activity: when x= (....)

L.H.S.

= 12+ 4 (……) – 5

= 1 + 4 – 5

= (….) – 5

= ……..

= R.H.S.

Therefore x = 1 is a root of quadratic equation X2 + 4x -5 = 0.​

Answer 1

Answer:

• To decide whether 1 is a root of quadratic equation X2 + 4x -5 = 0 or not complete the following activity.

Activity: when x= (....)

L.H.S.

= 12+ 4 (……) – 5

= 1 + 4 – 5

= (….) – 5

= ……..

= R.H.S.

Therefore x = 1 is a root of quadratic equation X2 + 4x -5 = 0.