Thursday

April 17, 2014

April 17, 2014

Posted by **jenny** on Monday, May 7, 2012 at 8:20pm.

Solve the system by elimination.

1)y=x^2+2

-4x-y=10

2) Solve the system using substitution.

Y=-3x^2+x-2

Y=-5x+3

- algebra 2 -
**Reiny**, Monday, May 7, 2012 at 8:35pm1)

add them the way they sit

-4x = x^2 + 12

x^2 + 4x + 12 = 0

I would complete the square:

x^2 + 4x + 4 = -12 + 4

(x+2)^2 = -8

x+2 = ± √-8 = ± 2√2 i

x = -2 ± 2√2 i

for 2)

you would get

-5x+3 = -3x^2 + x - 2

3x^2 - 6x + 5 = 0

give it a shot...... (use the formula)

**Related Questions**

algebra 2 - Nonlinear systems Solve the system by elimination. y=x^2+2 -4x-y=10 ...

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

Math Homework - Hello! I need help with these math questions, thanks! :) 1.) ...

algebra URGENT! - Solve the system using elimination. 2x – 2y = –8 x + 2y = –1 ...

College Algebra - Please help! x-2y+z=7 2x+y-z=0 3x+2y-2z=-2 a. Solve the above ...

Algebra/Elimination method - Solve using the elimination method. If the system ...

Algebra 2 - Solve this system by substitution: 2x-3y=12 x-4y=6 Slve this system ...

Math - Please help! x-2y+z=7 2x+y-z=0 3x+2y-2z=-2 a. Solve the above system of ...

Algebra - X-2y=-1 2x+y=4 solve each system using elimination. Tell whether the ...

algebra 2 - Solve the system by elimination. Y=x^2+2, -4x-y=10