Question

check whether the following are quadratic equation:x(x+1) +8=(x+2)(x-2) ​

Answer 1

Answer:

yes

Step-by-step explanation:

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

x²+1+8=x²-4

highest degree is 3 hence it is quadratic

Answer 2

Answer:

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

x²+x+8=x²+2x-2x-4

x²+x+8=x²-4

x²-x²+8+4

12

not quadratic equations