Question

x^2+y^2=2
y+3x=-2

Answer 1

plz help.. two problems due in 25 min

Answer 2

non linear equations

Answer 3

what are you trying to do? solve for y?

Answer 4

no im trying to solve the systems of equations

Answer 5

points x,y and there may be more than one

Answer 6

Ive got this and the exact same type of problem then im done but there due in 20 min and i ahve no clue how to do it

Answer 7

Hey myninya can you talk on group chat after u answer this thx :)

Answer 8

y+3x=-2 implies y=-2-3x
the other the equation we have x^2+y^2=2
lets plug that first equation y=-2-3x into the second equation x^2+y^2=2
x^2+(-2-3x)^2=2
x^2+(4+2(-2)(-3x)+9x^2)=2
x^2+4+12x+9x^2=2
10x^2+12x+4-2=0
10x^2+12x+2=0
5x^2+6x+1=0
you can solve for x right?

Answer 9

okay, they intersect at (-1.7,3.1)

Answer 10

(17/10,and 31/10) is that right??

Answer 11

5x^2+5x+x+1=0
5x(x+1)+(x+1)=0
(5x+1)(x+1)=0
5x=-1 x=-1
x=-1/5
they intersect at two points
we can find the corresponding values

Answer 12

(-1/5, -2-3(-1/5))=(-1/5,-2+3/5)=(-1/5,-7/5)
(-1,-2-3(-1))=(-1,-2+3)=(-1,1)

Answer 13

I hate to be a pain in the you know what but would you mind helping me with one more before you go, this is a huge help!!!

Answer 14

x^2+y^2=30
x-y^2=-10

Answer 15

okay you do exactly the same steps are before but this time y = root(x+10), okay?

Answer 16

so u get x² + x + 10 = 30, x² + x - 20 = 0, then (x+5)(x-4) = 0, x = -5, x = 4

Answer 17

and y would be root (x+10)

Answer 18

so you plug that into it how??

Answer 19

2nd equation we have y^2=10+x
1st equation we have x^2+10+x=30
x^2+x+10-30=0
x^2+x-20=0
(x+5)(x-4)=0 gives x=-5,4
y^2=10+x so y=+ or - sqrt(10+x)
y=+sqrt(10+x)
y=sqrt(10+-5)=sqrt(5)
y=sqrt(10+4)=sqrt(14)
also we have
y=-sqrt(10+x)
y=-sqrt(10-5)=-sqrt(5)
y=-sqrt(10+4)=-sqrt(14)
so we have 4 points of intersection

Answer 20

(-5,sqrt(10))
(-5,-sqrt(10))
(4,sqrt(10))
(4,-sqrt(10))

Answer 21

myininaya you seem like a very nice person, can we talk on group chat if ur dont answering this ques?

Answer 22

its still saying my answer is wrong??

Answer 23

nm

Answer 24

wait my y^2 was wrong y^2=x-10 is the mistake

Answer 25

so it wuld b 4roto 14
I got it thank you gor you help

Answer 26

no wait it was right it was -10 not 10
nvm i still stand by my answers

Answer 27

ok thanks got it

Answer 28

:) ok cool

Answer 29

can u help me too plz