What is a quadratic equation that has a root sum of 1 and product of -1?

Step-by-step explanation:

Let and be the roots of the required quadratic equation.

Then the equation is formed using:

or

From the given information, sum of the roots is:

and the product is

Therefore the required equation is

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40