Ask a New Question

Question

solve the simultaneous equation
2x+2y=7
x^2-4y^2=8
14 years ago

Answers

sanjeet
x^2-4y=8.............(1)
2x+2y=7
or 2x=7-2y
or x=7-2y/2......(2)

from 1&2
(7-2y)^2-4y=8
or 49-28y+4y^2-4y=8
or 4y^2-32y=41
4y(y-32)=41
either 4y=41....(a)
or y-32=41.....(b)
from a
y=41/4=10.25
from b
y=73

so, y=10.25 or 73
14 years ago

Related Questions

Solve the simultaneous equation x+y=1 x squared + y squared=25 Solve the simultaneous equations: 3x-2y=19 2x+3y=4 Do i create a 3rd eq like this? 6x-4y=38 and... solve the simultaneous equations to find the coordinates of the point of intersection for the pair o... Solve the simultaneous equations (x +3)(y+ 5)=24 (y +5)(z-7)=48 (z+ 7)(x+ 3)=32 solve the simultaneous equations: y=x-2 ysquared+xsquared=10 solve the simultaneous equations; log x base 2-log y base 4=4, log (x-2y)base 2=5 Solve the equation simultaneously.1/3x+y =3,x+1/2y=4 solve the simultaneous equations for -2x+y=-3 and x+y=3 Solve the simultaneous equation below. X² +xy=4 Y-x=2
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use