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Akimi4 [234]
3 years ago
13

What are the zeros of f(x) x^2-x-20

Mathematics
2 answers:
PolarNik [594]3 years ago
8 0

Answer:

x = - 4, x = 5

Step-by-step explanation:

To find the zeros equate f(x) to zero, that is

x² - x - 20 = 0

Consider the factors of the constant term (- 20) which sum to give the coefficient of the x- term (- 1)

The factors are - 5 and + 4, since

- 5 × 4 = - 20 and - 5 + 4 = - 1, thus

(x - 5)(x + 4) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 4 = 0 ⇒ x = - 4

x - 5 = 0 ⇒ x = 5

EastWind [94]3 years ago
6 0

Answer:

x= -4 and x= 5

Step-by-step explanation:

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Given :

Apa-bear weighs 250 lb.

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Answer:

Step-by-step explanation:

Given that divisor is 24 and dividend is 1344 and we are to use box method.

Long division is often considered one of the most challenging topics to teach. Luckily, there are strategies that we can teach to make multi-digit division easier to understand and perform.

The Box Method, or  the Area Model, is one of these strategies. It is a mental math based approach that will enhance number sense understanding. Students solve the equation by subtracting multiples until they get down to 0, or as close to 0 as possible.

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