aaliyahibarra
aaliyahibarra aaliyahibarra
  • 19-09-2019
  • Mathematics
contestada

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

Respuesta :

jimrgrant1 jimrgrant1
  • 19-09-2019

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

Answer Link
kalibailas
kalibailas kalibailas
  • 13-04-2020

Answer:

x= -4 and x= 5

Step-by-step explanation:

Answer Link

Otras preguntas

answer the picture below! 10 points
Help please ! 50 points.
What is anantomy and physiology​
Which of the well the list represents text evidence pieces that all support the main idea in this paragraph 
the 9th term of an arithmetic sequence is 29 and the 27th term is 83 find a and d
what is Lorentz law?​
Z=2x+6xy solve for x
Trying to find the energy in calories but, I don't understand the last part of the formula. Please help! energy in calories = (mass of water)(change in water te
HELP!!!! My Calculator Won't Work! What is (5412^2)-(7896)?
Describe the pattern observed in volume measurements as different masses or volumes of the unknown solid or liquid were selected. Explain why this pattern exist