Question

Check if x(x + 1) + 8 = (x + 2) (x – 2) is in the form of quadratic equation.​

Answer 1

$\pink{\huge{\underline{\underline{♡Answer♡}}}}$

x(x + 1) + 8 = (x + 2) (x – 2)

x2+x+8 = x2-22 [By algebraic identities]

Cancel x2 both the sides.

x+8=-4

x+12=0

Since, this expression is not in the form of ax2+bx+c, hence it is not a quadratic equation.

Answer 2

Answer:

✒solution:

Since x(x + 1) + 8 = x2 + x + 8 and (x + 2)(x – 2) = x2 – 4

Therefore, x2 + x + 8 = x2 – 4

i.e., x + 12 = 0

It is not of the form ax2 + bx + c = 0.

Therefore, the given equation is not a quadratic equation..

Explanation: