I would set the equations on top of each other and subtract
6x+y=21
- 3x-y=6
________
3x=15
Then solve for x
X=5
To solve for y, plug 5 in for x for one of the equations
D: (-7, -5)
Coordinates for the rectangle you describe:
(-5, 6), (-2, 6), (-5, 1), (-2, 1)
The answer is 250 points, to find this just divide by 2 three times.
Answer:
Step-by-step explanation:
hello :
x²-3x-10=0 means : (x-5)(x+2)=0
x-5=0 or x+2=0
conclusion two solutions : 5 and -2
