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inessss [21]
3 years ago
6

Simplify the expression to a polynomial in standard form: (4x+5) (x^2-3x-2) PLEASE HLEP

Mathematics
1 answer:
pickupchik [31]3 years ago
7 0

Answer:

4x^3-7x^2-23x-10

Step-by-step explanation:

So we have the expression:

(4x+5)(x^2-3x-2)

Distribute. Multiply (4x+5) to each term:

(x^2)(4x+5)+(-3x)(4x+5)+(-2)(4x+5)

Distribute:

=(4x^3+5x^2)+(-12x^2-15x)+(-8x-10)

Combine like terms:

=(4x^3)+(5x^2-12x^2)+(-15x-8x)+(-10)

Add and simplify:

=4x^3-7x^2-23x-10

And this is in descending order, so it's in standard form.

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which of the following angles would from an obtuse isosceles triangle 100,40,40 30,75,75 90,30,60
Vesna [10]

Answer:

100, 40, 40

Step-by-step explanation:

7 0
3 years ago
@jdoe<br><br> As promised. The link will be whatever.
Lady_Fox [76]
Ok, so we see in
y=a(x-h)^2+k
vertex is (h,k)
vertex is highest or lowest point
on one side, it goes up and other side it goes down

if a is positive, then it goes down then up
if a is negative, it goes up then down

we see
f(x)=2(x+3)^2+2
2 is positive
goes down then up
vertex is (-3,2)

so decreases from -infinity to -3 or ininterval
(-infinity,-3)

answer is first option
6 0
3 years ago
The cost of 11 dvds and 7 cds is 172.50 and the cost of 10 dvds and 7 cds is 155.80. How much does a cd and dvd cost?
AleksandrR [38]

Answer:

The question has a mistake

Step-by-step explanation:

11d+7c= 172.5

10d+7c= 155.8

By subtraction;

1d+ 0c = 16.7

1d = 16.7

11×16.7+7c=172.5

7c = 172.5-11*16.7

You will get a negative answer yet the cost cannot be negative.

5 0
3 years ago
Kelly's teacher asked her to draw a triangle that doesn't have any lines of symmetry what type of triangle should Kelly draw an
romanna [79]

Answer:

Scalene type of triangle

Step-by-step explanation:

It can't be isosceles triangle because has at least one line of symmetry and an equilateral triangle has three lines of symmetry... While scalene does not have enough space to have sides with equal length.

3 0
3 years ago
Plz help me, no one has. I'll give 100 brainly pts
Serhud [2]

Answer:

to find the distance between two points, in order to find the length of the triangle we need first to find the instance between the two points

distance between (2,9) and (2,4) .....a =5

distance between (2,4) and (6,4) .....b = 4

when we find the length of the side of the triangle , then we can apply the Pythagorean theorem to find hyp. c

a²+b²=c²

6 0
3 years ago
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