Question

Check whether x(x+1)+8 = (x+2)(x-2) is quadratic equations.
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Answer 1

Answer:

Step-by-step explanation:

x(x+1)+8=(x+2)(x-2)

x^2+x+8=x^2-4

x+8=-4

x=-12

x+12=0

this is not a quadratic equation as the coefficient of x^2 is zero

Answer 2

$\huge \underline { \mathbb{SOLUTION:-}}$

Given:

• LHS = x(x+1)+8
• RHS = (x+2)(x-2)

On simplifying 1st equation,

We get:

=> x²+x+8

Therefore,

=> x²+x+8 = x²-4

=> x+12 = 0

As we can see that,

it is not of the form ax²+bx+c=0.

Therefore,

The given equation is not a quadratic equation.