xmayble
xmayble xmayble
  • 21-05-2017
  • Mathematics
contestada

Please help me understand this problem.

Please help me understand this problem class=

Respuesta :

bcalle
bcalle bcalle
  • 26-05-2017
The rule to find the SUM of the roots of a quadratic equation is: -b/a
The rule to find the PRODUCT of the roots of a quadratic equation is: c/a
We need the sum to be -3 and the product to be 4-4/

If you go through the answer choices:
A) a = 1, b = 4, c = - 3
-b/a = -4/1 = -4 This is NOT correct
B) a = 1, b = 3, c = 4
-b/a = -3/1 = -3 This is correct
c/a = 4/1 = 4 This is also correct

LETTER B is the correct answer.
 
Answer Link

Otras preguntas

How are intensity, sound, and energy are related
sin(sin^-1[tex] \pi [/tex])
What is the slope of the line that passes through (2,3) and (6, -4)? 4/7 -7/4 1/7 -1/4
A line passes through point (-2,5) and has a slope of 2/3. Points A (x,3) and B (-2,y) lie on on the line. The value of X is [ ], and the value of y is [ ]? HE
The width of a rectangle is 14 cm and its length 16cm The ratio of the width to the perimeter
I need the answer been breaking my back all day
A sandwich shop offers the toppings shown below. how many 2 topping sandwiches can you make? ham turkey lettuce tomato bacon cheese mustard A. 14 B. 21 C. 28 D.
Please help me. I'm not very good at math
A population, P, of birds is doubling in size each year, according to the model P = 100(2t), where t reperesents years. What was the initial population size?
What is a causal relationship? A. A relationship in which one event prevents another from happening B. A relationship in which two events occur at the same time