Front

What letter usually represents an imaginary number?

Back

i

Front

Back

-1

Front

Back

i

Front

Back

All of the above

Front

Back

Front

What is the quadratic formula?

Back

Front

What does the discriminant (b^2 - 4ac) tell us about the solutions of a quadratic equation?

Back

It indicates the nature of the roots: if > 0, two real solutions; = 0, one real solution; < 0, two complex solutions.

Front

What is the significance of complex solutions in quadratic equations?

Back

They occur when the discriminant is negative, indicating no real solutions.

Front

Back

Front

What is the relationship between complex numbers and the Cartesian plane?

Back

Complex numbers can be represented as points in the Cartesian plane, with the real part on the x-axis and the imaginary part on the y-axis.