Answer:
Explanation:
1) quadratic equation: it represents a parabola
2) C : the greatest exponent is 2
3) C : it’s important only that remains x^2
4) A : we must see the term with x^2
5) D: we must move 9 to the left of equal and change it sign
6) C: the fourth option is wrong because the quadratic term is 2x^2