Question

check whether the following are quadratic equations (x²+1) (X+2)=(X+3)²​

Answer 1

Let's start expanding from LHS

(x² + 1) ( x + 2)

= x²(x + 2) + 1(x + 2)

= x³ + 2x² + x + 2

Now we expand RHS

(x + 3)²

= x² + 9 + 6x

Here x³ + 2x² + x + 2 ≠ x² + 9 + 6x

So LHS ≠ RHS

Hence we deduce that (x² + 1) ( x + 2) ≠ (x + 3)²

Happy Studying !