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

Write a summary of the article in 4-5 sentences. The sit-in movement

There are 2 rap songs for every 3 rock songs on Will's MP3 player. There are a total of 120 rock songs. How many rap songs are there?

Solve for x 2x + 6 ≥ 16

This is number three Nd I neeed help with this I can help you with anything

when the earth is closest to the hot sun it is not summer why ? why when the sun is farther

What were the reasons for the first major expansion of voting rights in the United States?

Please help with the blank spaces! Will thank and give brainliest to the correct answer! To fill in the blank you have to use the verb in parentheses and put

Find AB, BC, and BC. Round to the nearest tenth

Which right have to do with personal freedom

PLS help ASAP I DONT have time to answer this, it also detects if it’s right or wrong.