Answer:
9 over -15
Step-by-step explanation:
you subtract the coordinates from each oth
The number of positive roots is the number of changes of signs there are, then decrease by 2 each time and stop when you get to 1 or 0
negative roots, sub every x with -x and reevaluate, count change of signs
decrease by 2 each time and stop when you get to 1 or 0
y=+2x⁵-x⁴-2x³+4x²+x-2
+,-,-,+,+,-
1 2 3
3 or 1 positive roots
replace x with -x ( baically flip all signs of odd powerd numbers)
y=-2x⁵-x⁴+2x³+4x²-x-2
-,-,+,+,-,-
1 2
2 or 0 negative roots
3 or 1 positive roots
2 or 0 negative roots
2nd option is answer
Answer:
Step-by-step explanation:
X }
X+1 }
X+2 }
All of it has to equal 39
Add all the x’a
3x+3=39
-3 -3
3x=36
3. 3
X=12
X+1 =13
X+2 = 14
=14 is the largest
Answer:
Answer will be 
Step-by-step explanation:
We have to perform the calculation
without changing into decimal
can be written as 
So 
Now taking
common

Answer:
X=-3/2
Step-by-step explanation:
-2(x+2)=-1
Distribute
-2*x and -2*2
-2x-4=-1
Solve for x
-2x-4=-1
+4 +4
-2x=3
/-2 /-2
x=-3/2