Using Quadratic formula,
x = 0.386, -3.886
(1)x+y=11 given
(2)x-y=5 given
x=5+y equality property of addition (add y to both sides of (2)
5+y+y=11 sub previous result in to (1)
2y=6 algebra and simplificatiuon
y=3 division property of equality (divide both sides by 2)
x=8 again sub previous into (1)
Answer:
x=7, x= -2
Step-by-step explanation:
- Start by putting the whole equation to one side: x2-5x=14 ----> x2-5x-14=0
- Next, factor the equation: x,x -7,2 ----> (x-7)(x+2)=0
- Now, solve both equations: x-7=0....x=7 AND x+2=0.....x= -2
- Plug both in to make sure that they are correct....both are correct