Thursday

April 17, 2014

April 17, 2014

Posted by **Chuck** on Wednesday, April 20, 2011 at 11:06am.

x^2+4y^2=25

y^2-x=1

- algebra -
**Henry**, Thursday, April 21, 2011 at 11:37pmEq1: X^2 + 4Y^2 = 25.

Eq2: Y^2 - X = 1.

Y^2 = X + 1.

In Eq1, substitute

- algebra -
**Henry**, Friday, April 22, 2011 at 12:06amEq1: X^2 + 4Y^2 = 25.

Eq2: Y^2 - X = 1.

Y^2 = X + 1.

In Eq1, substitute X+1 for Y^2:

X^2 + 4(X+1) = 25,

X^2 + 4X + 4 = 25,

(X+2)^2 = 25,

Take sqrt of both sides:

X+2 = +-5,

X = X = 5-2 = 3.

X = -5-2 = -7.

Solution set: (3,+-2), (-7,+-sqrt6i).

**Related Questions**

algebra - i need help with these problems (either a solution or how to plug them...

math - can someone check this i'm really lost i thought i had it and now i dont ...

Algebra 2 - I need help with this problem because I do not have a graphing ...

Algebra 1B--check - Solve for y in the following system of equations. x + 4y...

Algebra 1B-- - Solve the following system of inequalities by graphing. 5x - 4y...

algebra - solve the systems of equations by graphing 2x-y=1 8x-4y=+8

algebra - {-3x - y= -10 { 4x - 4y = 8 Solve the system by graphing

Algebra - Solve each system graphically. 4y = x + 8 3x - 2y = 6 Basically, what ...

Algebra 2 - I need help with this problem because I do not have a graphing ...

algebra - I AM TRYING TO SOLVE A SYSTEM OF EQUATIONS BY GRAPHING AND CAN GET ...