dominique1729 dominique1729
  • 06-04-2020
  • Mathematics
contestada

4x2 - 6x-1 = 0
Help please

Respuesta :

profarouk profarouk
  • 06-04-2020

Good evening

Answer:

x = (3 + √13)/4

or

x = (3 - √13)/4

Step-by-step explanation:

Firstly let’s calculate the discriminant Δ

Δ = (-6)² - 4(4)(-1) = 36 + 16 = 52 then √Δ = √52 = 2√13

then

x = (6 ± 2√13)/8

then

x = (3 ± √13)/4

__________________________

:)

Answer Link

Otras preguntas

4 less than the difference between 8 and -9
If 3.64g of sand is separated from 5.25g of a mixture of salt and sand what is the percentage of sand in the sample
what different meanings can you give for the story's title?
what is the value of x if 6 + 7 - 9 + 4x = 12
a rock is dropped into a well hits the water in 5 secs. if there is no air resistance, what would be the rocks final speed?
need help.  multiply and simplify answer,  2x(x-9y)²
Classify the triangle defined by the points A(3,-4), B(5,-1), C(6,-2) as equilateral, isosceles, or scalene.
need help.  arrange the polynomial in descending order,  x5+x+2x³+6+2x²= ______
Some variation must be present in a population in order for natural selection to take place. These variations arise from mutations in the DNA and what?
what is higher 4\8 or 4\10