ffidha ffidha
  • 01-09-2019
  • Mathematics
contestada

How to solve the above simultaneous equation?​

How to solve the above simultaneous equation class=

Respuesta :

MoniMS
MoniMS MoniMS
  • 01-09-2019

Answer:

C -2 or 1

Step-by-step explanation:

So from the equation you have x^2-x-1=-2*x+1

x^2-x-1+2*x-1=0

x^2 +x -2 =0

D= 1^2 -4*(-2)= 1+8=9

x = (-1+-3)/2

So x is either (-1+3)/2=2/2=1

or (-1-3)/2=-2

Answer Link

Otras preguntas

Deere company holds a​ $10,000 note receivable dated july​ 1, 2015, with​ 10% interest. what adjusting entry is needed on december​ 31, 2015? a. no entry is nee
The various growth phases through which most populations go are represented on a(an)
Natural selection can cause less desirable traits to: become more common in a population form in an individual become less common in a population disappear from
energy can make matter a. move b.changec. work d. all of the above
If the reaction of 9.87 moles of potassium with excess hydrobromic acid produced a 79.8% yield of hydrogen gas, what was the actual yield of hydrogen gas? unbal
What day marked the beginning of the french revolution?
How to find the slope of a line with one coordinate and the x intercept
answer ????????????????????
How do scout and jem mature in to kill a mockingbird?
The nervous system is affected when tobacco reduces the flow of oxygen to the brain? True False