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

You may feel pressured to become sexually active if your friends are sexually active. Please select the best answer from the choices provided. T F
can any one help me i have toefl exam next week
What was the primary motive behind president Franklin D Roosevelt's 1937 proposal to add members to the Supreme court?
What to events were causes of the American revolution
1,2,4,7,11,16,22, ___,____ What is the rule?
What planet is 1.00 ua from the sun?
Which is the optical illusion? A. a planet's albedo B. occultation of one object by another C. inferior planet transit of the sun D. Superior planet retrograde
what is the reciprocal of 3.5?
Someone help please
Explain why an apple is healthy. No fake answers please thanks