sidneyfinch2002 sidneyfinch2002

07-06-2017
Mathematics

contestada

what are the x-intercepts of the function f(x)=-2x^2-3x+20

Respuesta :

ghanami ghanami

07-06-2017

hello :
f(x) = 0
2x²-3x +20 =0
Δ = b²-4ac a=2 b= -3 c = 20
Δ = (-3)²-4(2)(20) = 9+160=169 = 13²
x1 = (3-13)/4 or x2= (3+13)/4
the x-intercepts are : -5/2 , 4

Answer Link

Otras preguntas

As of 2012, Twitter has approximately how many members? CA 465 thousand OB. 465 million c. 465 billion D. 46 billion Reset Next

you miss three out of 10 questions on a science quiz and four out of 15 questions on the math quiz which quiz has a higher percent of correct answers

Según el refrán que cita el narrador, ¿en qué está la belleza? En los ojos de las personas bellas En el reflejo de los ojos En los ojos de la persona que mira E

x^2 + 10x + 29 = 0 How do I solve this equation (imaginary numbers acceptable)

Social Security is considered to be mandatory spending by the government. Question 38 options: True False

1. No estaba claro que la policía __ la identidad del asesino. supierasupo 2. Es cierto que tienen que __ algunas leyes en este estado. cambiar cambiara 3. Le s

During her first year of college, Sarah left her options open by choosing a variety of courses. She had planned to be a business major, but after two summers of

Is there significance to the fact that human existence is the only truly sentient species within our observable universe? And if so, is there a reason to debate

In general, what conditions create a whiteout (blizzard)?

Each time a coin is flipped, it has a 50% chance of landing on heads and a 50% chance of landing on tails. The coin will be flipped 3 times. What is the probab