emmaunited30 emmaunited30
  • 15-06-2020
  • Mathematics
contestada

Which equation has the solutions x = 1 plus-or-minus StartRoot 5 EndRoot?

Respuesta :

Adetunmbiadekunle Adetunmbiadekunle
  • 21-06-2020

Answer:

The quadratic equation is x^2-2x-4

Step-by-step explanation:

We want to know the equation that has the solution below;

x = 1 ± √5

This means x = 1 + √5 or 1 - √5

The equation would thus be;

(x-1-√5)(x-1+ √5)

= x(x-1+ √5)-1(x-1+ √5)-√5(x-1+ √5)

Opening the brackets we have ;

x^2-x+ √5x-x + 1 -√5-√5x+ √5-5

collecting like terms we have;

x^2-2x+1-5

= x^2-2x-4

Answer Link
wtfrgyhuji
wtfrgyhuji wtfrgyhuji
  • 30-09-2021

Answer:

Letter D

Step-by-step explanation:

EDGE2021

Answer Link

Otras preguntas

describe the ancient interaction between north africa and southwest asia
Solve for x in terms of a and b:x^2 - 3ax - 4a^2 = 0x = 4a, x = -a. <<<this is the answer but what are the steps to get it?
How many tenths are in one whole
What is the volume of a box that has a length of 10 inches,a width of 3 inches,and a height of 7 inches!!
Is 63 a prime or composite number
how were mayan cities organized
How do crabs support and protect themselves without a skeleton
How to factor 985xy +350x^2 +660y^2 by grouping?
Solve for x in terms of a and b:x^2 - 3ax - 4a^2 = 0x = 4a, x = -a. <<<this is the answer but what are the steps to get it?
Alex usually runs for 21 hours a week, training for a marathon. If he is unable to run for 3 days, describe how to find out how many hours of training time he l