Weegy: [ ]
User: Solve the system of linear equations below.
x + y = 4
2x + 3y = 0
Weegy: FOIL (First Outside Inside Last)
= 2x(2x) + 2x(-3y) + (-3y)(2x) + (-3y)(-3y)
= 4x^2 + (-6xy) + (-6xy) + (9y^2)
= 4x^2 - 12xy + 9y^2
(More) 3
The solution set for x + y = 4, 2x + 3y = 0 is (x = 12, y = -8).
(x + y = 4) * (-2);
-2x - 2y = -8;
(-2x - 2y = -8) + (2x + 3y = 0);
y = -8;
x - 8 = 4;
x = 4 + 8;
x = 12
Added 1/2/2015 2:48:42 PM
This answer has been confirmed as correct and helpful.
