Question

Check whether the following are quadratic equation (x-3) (2x+1) =x (x+5)

Answer 1

(2x^2+x)-(6x+3)=x^2+5x
2x^2+x-6x-3=x^2+5x
2x^2-5x-3=x^2+5x
2x^2-x^2 - 3= 0
x^2-3=0
here, degree is 2, hence it is quadratic equation

Answer 2

Step-by-step explanation:

its degree is 2. hence it is a quadratic equation