Answer:
4x^2 + 3x - 9
Step-by-step explanation:
First, add together functions R(x) and S(x). Stack them vertically and combine like terms:
R(x) = 2 - x^2
S(x) = 2x + 5
------------------
(R+S)(x) = -x^2 + 2x + 7
Now subtract the above result from Q(x):
Q(x) - (R(x) + S(x)) = 3x^2 + 5x - 2 + x^2 - 2x - 7, or 4x^2 + 3x - 9
I would help but what do you need help with?
The domain of f(x) is:
A) {–4 < x ≤ 4}
Y=-x²+12
This is a parabola opening downward because the coefficient of x² =1 >0
The domain (the value of the input of x) is all real numbers.
to find some points (& you can extend to 1,000,000 points) that are on the graph, replace x by any value & you'll find the related value of y
Example:
f(1)= 1²+12 = 13 ==> for x=1 y=13 & this points ∈ to the parabolas
f(2) = 2²+12 =16 ===> for x=2, y=16) this points ∈ to the parabolas
and so on & so forth
Answer:
<em>The number is -6.</em>
Step-by-step explanation:
Let x = the unknown number
"the sum of a number and four" = n + 4
"Six times the sum of a number and four" = 6(n + 4)
"Six times the sum of a number and four is -12." is the equation
6(n + 4) = -12
Divide both sides by 6.
n + 4 = -2
Subtract 4 from both sides.
n = -6
