The Discriminant
Part of the quadratic formula that tells the number of real solutions of a quadratic.
What is the discriminant?
The number of solutions of a polynomial.
What is indicated by the degree?
Cannot be written as the fraction of two integers.
What is an irrational number?
The formula for the area of a circle.
What is A =
pi r^2
A way to solve a proportion.
What is cross multiplying?
The discriminant equals zero.
What implies one real solution?
The first step in solving a polynomial equation.
What is putting the polynomial in standard form?
Can be written as a fraction of integers.
What is a rational number?
The formula for the circumference of a circle.
What is C =
2pir
A way to solve a fractional equation.
What is multiplying by the lcd to remove denominators?
A discriminant greater than zero.
What are two real solutions?
The second step in solving a polynomial equation.
What is looking for a GCF and factoring it out?
The cube root(s) of -125.
What is -5?
The exact radius of a circle whose circumference is 20.
What is
10/pi
The solution(s) of 5/(x - 1) = 2/x.
What is x = -2?
The number of real solutions of x2 - 2x + 1 = 0.
What implies one real solution?
The solutions of x3 + 2x2 + x = 0.
What are 0 & -1?
The fourth root(s) of 81.
What are +3 and -3?
The approximate area of the face of a clock if its radius is 7.1 inches.
What is 158 square inches?
The solution of x/12 + x - 5/4 = 2.
What is 39/4?
The number of real solutions of x2 - 2x - 3 = 0.
What are two real solutions?
The solutions of x2(x2 + 1) + 4 = x4 + 4x.
What is 2?
If the decimal form of a number never ends, it must be irrational. True or false.
What is a false?
The solutions of the equation 4x2 - 25 = 0. The solutions are rational or irrational.
What are
+- 5/2?
The positive integers are closed with respect to certain operations.
What are addition and multiplication?