Question

Check whether the following are quadratic equation or not(1)(x-3) (2x+1) = x(x+5)(1) (x+2)2 = 2x(x2 - 1)​

Answer 1

Answer:

(1). (x-3) (2x+1)=x^2+5x

Step-by-step explanation:

(x-3) (2x+1)= 2x^2+x-6x-3 = 2x^2-5x-3 = x^2+5x

=x^2-10x-3=0

(2). 2x+4=2x^3-2

Therefore (1) is correct and (2) is incorrect