What are the zeros of f(x) = x2 + x - 20?

So when you use an equation like this, you use the PS2 method. P means you find the product of the first and last numbers in the equation, so in your problem it would be -20. S means the number in front of the 2nd number, and in your problem it would be 1 because anything times 1 is itself. The 2 means that you need to find two numbers that multiply to your product: -20, and the sum which is 1. And the two numbers are -4 and 5. And since it’s equal to zero, it’s x=-5 and x=4. Your welcome

answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following