Problem 13.2.1
Find the sum and product of the roots of the quadratic .
Focus mode: every practice problem from the chapter, one after another.
Find the sum and product of the roots of the quadratic .
There are two values of for which the equation has only one solution for . What is the sum of these values of ?
Let and be the roots of the equation . Suppose that and are the roots of the equation . What is ?
A rectangular box has distinct edge lengths , , and . The sum of the lengths of all edges of is , the sum of the areas of all faces of is , and the volume of is . What is the length of the longest interior diagonal connecting two vertices of ?
For how many ordered pairs of integers does the polynomial have distinct integer roots?
What is the sum of the reciprocals of the roots of the equation ?
The quadratic equation has roots twice those of , and none of , , and is zero. What is the value of ?
Let be a function for which . Find the sum of all values of for which .
What is the sum of all real numbers for which ?
The polynomial has three positive integer roots. What is the smallest possible value of ?
Suppose that and are nonzero real numbers, and that the equation has solutions and . Then the pair is
Suppose that the roots of are , , and , and that the roots of are , , and . Find .
For certain real numbers , , and , the polynomial
has three distinct roots, and each root of is also a root of the polynomial
What is ?
Let , , and be three distinct one-digit numbers. What is the maximum value of the sum of the roots of the equation ?
All the roots of the polynomial are positive integers, possibly repeated. What is the value of ?
This problem also appears in the book as 13.2.15.
All the roots of polynomial are positive integers, possibly repeated. What is the value of ?
Let , , and be the roots of the polynomial . What is the sum
(Give your answer in terms of .)
In the polynomial , the product of of its roots is . Find .
The zeros of the function are integers. What is the sum of the possible values of ?
Let , , and be the three roots of the equation
Find .
Find the sum of the roots, real and non-real, of the equation , given that there are no multiple roots.
How many distinct ordered triples satisfy the following equations?
Consider the polynomials and . Given that , , , and are the roots of , find .
For integers , , and , let and . Find the number of ordered triples of integers with absolute values not exceeding for which there is an integer such that .
Let , and let and be two quadratic polynomials also with the coefficient of equal to . David computes each of the three sums , , and and is surprised to find that each pair of these sums has a common root, and these three common roots are distinct. If , then , where and are relatively prime positive integers. Find .