+0  
 
0
1158
1
avatar
how to solve:
x^2+y=9
y=x+9
 Feb 13, 2012
 #1
avatar+3143 
0
[input]solve( x^2+y=9, y=x+9)[/input]

x^2+y=9
y=x+9

x^2+(x+9)=9
x^2+x=0
=> x=0 or x=-1

y=0+9= 9 or y=-1+9 = 8
 Feb 13, 2012

6 Online Users

avatar
avatar
avatar
avatar