mjk369 mjk369
  • 04-03-2016
  • Mathematics
contestada

X^2 + y^2=40 and y=x-4 solve this simultaneous equation

Respuesta :

Аноним Аноним
  • 04-03-2016
Write x-4 instead of y.
x²+(x-4)²=40
x²+x²-8x+16=40
2x²-8x-24=0
x²-4x-12=0
(x-6)(x+2)=0
x=6 or x=-2

for x=6, y=6-4 = 2
for x=-2, y=-2-4 = -6
Answer Link

Otras preguntas

Which graph correctly solves the system of equations below? y = x2 + 3x + 4 y = x2 + 2x + 1
Write the equation, in slope-intercept form, of the line that has a slope of 2 and passes through the point (3, 1).
What is 1345/99 rounded to the nearest integer
when data points in a set of data are extreme enough to have a significant effect on the mean, the data point is said to be __________.
which situational archetype consists of two lovers who go through many trials but find a way to be together in the end?
What is 1345/99 rounded to the nearest integer
when all power and authority rests with one person, it is called a
2 propeties of copper
What is the square root of 2
What is the synonym for insensitive