Answer:
You cannot simply 5x+67 anymore
The correct answer is: The two expressions are not equivalent because they do not always have the same value when any value is substituted for k.
Hope this helps!! :)
X+y=7
x•y=-18
x+y=7
x=7-y
x•y=-18
(7-y)•y=-18
7y-y^2=-18
-y^2+7y+18=0
Y^2-7y-18=0
(y-9)(y+2)=0
y is either 9 or -2
x+y=7
x=7-y
X=7-9
X=-2
X•y=-18
9•(-2)=-18
-18=-18
There you go, y is 9 and x is -2
Answer:
I'm pretty sure the answer is C
Step-by-step explanation:
Answer:
Step-by-step explanation: