Answer:
The correct options should be B and C.
Step-by-step explanation:
Quadratic equation is an equation in which the highest degree of the variable is 2. No fractional power of variable is acceptable in the equation. So, the power of variable can be 0, 1, and 2 only.
The given equations are,
[tex]y=-x^2+5\sqrt{x}-16\\y=2x^2-12x+9\\x=2y^2-9y+4\\5x-3y=-6[/tex]
From the above equations, equation 1, 2, and 3 has degree 2. But in equation 1, the power of variable x is 0.5 which is a fraction.
So, equation 2 and 3 only are the quadratic equations.
Therefore, the correct options should be B and C.
For more details, refer the link:
https://brainly.com/question/24817658?referrer=searchResults
