A second degree polynomial function has the general form:

, where

.
The leading coefficient is a, so we have a=-1.
5 is a double root means that :
i) f(5)=0,
ii) the discriminant D is 0, where

.
Substituting x=5, we have
f(5)=a(5)^2+b(5)+c,
and since f(5)=0, and a is -1 we have:
0=-25+5b+c
thus c=25-5b.
By ii)

.
Substituting a with -1 and c with 25-5b we have:
Finally we find c: c=25-5b=25-50=-25
Thus the function is

Remark: It is also possible to solve the problem by considering the form

directly.
In general, if a quadratic function has leading coefficient a, and has a root r of multiplicity 2, then its form is
Answer:
Step-by-step explanation:
x=-1-2y
-2-4y-3y-12=0
-7y=14
y=-2
x=3
Answer:
I need the right problem.
Please read the whole thing.
Step-by-step explanation:
Hi. For this problem you are going to combine like terms.
For these problems, if you need any more help, you can search up algebra calculators on google.
I tried the problem and it said that there was too many equal signs. So, I would check to see if you asked this question correctly. I would ask your teacher.
Stay safe during these times,
The guy who tired to answer your question
Answer: The answer is D.) -2 and I'm correct :)
Step-by-step explanation:(-3,0) and (-4,2)
M=y2-y1
x2-x1
M= 2-0= 2
-4-(-3) = -1 ^Both equal to -2
Answer:
1960cm squared
Step-by-step explanation:
in case you're still confused ask where you're still confused and I'll offer my assistance.good day.