Answer:
x^3 + 9x^3 -6x -54
Step-by-step explanation:
first step is you're going to simplify the problem.
using the (a-b)(a+b)=a^2-b^2 formula combine the last two grouped numbers to equal (x+9)(x^2-6)
multiply the parenthesis to get x^3 - 6x + 9x^2 -54
reorder the terms and then you get your answer! x^3 + 9x^3 -6x -54
does this make sense? :)
46.25 - (2(3.75) + 2(8.3)) = 22.15 feet leftover.
Answer:
Okay I'm not sure this is correct, but I would like to try.
I think the answer is -15.
Step-by-step explanation:
I'm not to good at doing these problems, what I did was do 50 - 65 = ?
and I got -15.
I hope I helped! :)
Answer:
Step-by-step explanation:
19.
a) to find thhe x- intercept we make y=0
x² +4x -5 = 0
(x+5)(x-1) =0
x+5=0 so x=- 5
x-1 =0 so x= 1
b)
y-intercept is at (0, -5)
c)
axis of symmetry is at
x=-b/2a =-4/2*1 = -2
x= -2
d)
vertex is at (-2, -9) because x coordinate is on the axis of symmetry at -2 and
y= x² +4x -5= (-2) ² +4(-2) -5 = 4-8-5 = 4-13 = -9
Answer:
A. -1/2
Step-by-step explanation:
(2x+2)^2 - 3(4/3x)=3
x=-1/2
