Ok, first group x terms
f(x)=(x²+4x)-8
factor out quadratic coefient (no need but that's the step)
f(x)=1(x²+4x)-8
take 1/2 of the linear coefient and square it
4/2=2, (2)²=4
add positive and negative of it insides the parenthasees
f(x)=1(x²+4x+4-4)-8
factor perfect square
f(x)=1((x+2)²-4)-8
distribute
f(x)=1(x+2)²-4-8
f(x)=1(x+2)²-12
and, now if we wanted to find the x intercepts where f(x)=0 then
0=1(x+2)²-12
12=(x+2)²
+/-2√3=x+2
-2+/-2√3=x
x=-2+2√3 or -2-2√3
that is where the x intercept are
and completed square form is
f(x)=(x+2)²-12
Answer:
C
Step-by-step explanation:
There are three turning points.
The local minimums are (-1,-5) and (1, -5)
The local maximum is (0,-4)
Answer:
The inequality 
have a dashed line
Step-by-step explanation:
we have
The solution of this inequality is the shaded area below the dashed line
The equation of the dashed line is 
The slope of the dashed line is positive
The y-intercept of the dashed line is -5 ---> point (0,-5)
The x-intercept of the dashed line is x=3 ----> point (3,0)
Graph the solution
see the attached figure
Answer:
sorry can you write it down and take a pic of it
please that is the only way i can answer it
Step-by-step explanation:
Answer:
She does not have enough money to pay back her parents. She needs $3 to be able to do so.
Step-by-step explanation:
If she owes her parents $50 and she has $10 in savings, the her debt to them is only 40$ as 50-10 = 40. When she does chores she eliminates $12 from her debt and now owes them $28 as 40-12 = 28. When she gets $25 for her birthday she sues that to pay them back and 28-25 = $3. Therefore, she still owes them $3.
