A quadratic equation is one in which the highest exponent of x is 2.

is quadratic; the highest exponent is 2.
x³-3x²+1=0 is NOT quadratic. The highest exponent of x is 3, not 2.
5x-7=0 is NOT quadratic. The highest exponent of x is 1, not 2.
x²+3x-5=0 is quadratic; the highest exponent of x is 2.
x-5=9x+7 is NOT quadratic. The highest exponent of x is 1, not 2.
x²-x=3x+7 is quadratic; the highest exponent of x is 2.
The expression will be d. 9-7i
Maybe a yard or a foot of wood or smt i’m sorry if i’m not that helpful but i tried stay safe guysss :))
Answer:
1
Step-by-step explanation:
any number that is raised to the zero power will equal to 1. hope this helps!
300 minutes equals five hours.