Question

check weather it is quadratic or not

x²(x+1)+2x²(x-1)=6x²-2x+90​

Answer 1

Answer:

It is a cubic equation not quadratic equation.

Step-by-step explanation:

${x}^{3} + {x}^{2} + 2 {x}^{3} - 2 {x}^{2} = 6 {x}^{2} - 2x + 90 \\ 3 {x}^{3} - {x}^{2} = 6{x}^{2} - 2x + 90 \\ 3 {x}^{3} - 7 {x}^{2} + 2x - 90$

It is a cubic equation not quadratic equation.