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Arte-miy333 [17]
3 years ago
12

Help me ill give u 11 points if u do this for me !!!

Mathematics
1 answer:
zepelin [54]3 years ago
3 0

Answer:

I believe it's the third and fourth answers.

Step-by-step explanation:

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Answer please I’m dying from math
charle [14.2K]

Answer:

\huge\boxed{\text{D)} \  15x^4 + 2x^3 - 8x^2 - 22x - 15}

Step-by-step explanation:

We can solve this multiplication of polynomials by understanding how to multiply these large terms.

To multiply two polynomials together, we must multiply each term by each term in the other polynomial. Each term should be multiplied by another one until it's multiplied by all of the terms in the other expression.

  • <em>We can do this by focusing on one term in the first polynomial and multiplying it by </em><em>all the terms</em><em> in the second polynomial. We'd then repeat this for the remaining terms in the second polynomial.</em>

Let's first start by multiplying the first term of the first polynomial, 3x^2, by all of the terms in the second polynomial. (5x^2+4x+5)

  • 3x^2 \cdot  5x^2 = 15x^4
  • 3x^2 \cdot 4x = 12x^3
  • 3x^2 \cdot 5 = 15x^2

Now, we can add up all these expressions to get the first part of our polynomial. Ordering by exponent, our expression is now

  • \displaystyle 15x^4 + 12x^3 + 15x^2

Now let's do the same with the second term (-2x) and the third term (-3).

  • -2x \cdot 5x^2 = -10x^3  
  • -2x \cdot 4x = -8x^2
  • -2x \cdot 5 = -10x
  • Adding on to our original expression: \displaystyle 15x^4 + 12x^3 - 10x^3 + 15x^2 - 8x^2 - 10x

  • -3 \cdot 5x^2 = -15x^2
  • -3 \cdot 4x = -12x
  • -3 \cdot 5 = -15
  • Adding on to our original expression: \displaystyle 15x^4 + 12x^3 - 10x^3 + 15x^2 - 8x^2 - 15x^2 - 10x - 12x - 15

Phew, that's one big polynomial! We can simplify it by combining like terms. We can combine terms that share the same exponent and combine them via their coefficients.

  • 12x^3 - 10x^3 = 2x^3
  • 15x^2 - 8x^2 - 15x^2 = -8x^2
  • -10x - 12x = -22x

This simplifies our expression down to 15x^4 + 2x^3 - 8x^2 - 22x - 15.

Hope this helped!

7 0
2 years ago
Read 2 more answers
Juanita is making bread. She needs 3 1/ 2 cups of flour. Juanita only has a 1/ 4 -cup measuring cup. How many 1 / 4 cups of flou
galina1969 [7]

Answer:

juanita organizes her magazines into 3 equal piles. ... Miss Potts used a total of 28 cups of flour to bake some bread.

Step-by-step explanation:

3 0
3 years ago
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An asymptote for a function f(x) is a straight line which is approached but never reached by f(x).
ladessa [460]

Answer:

True

Step-by-step explanation:

That is the definition of a asymptote.  It is approached but will never get to the line.

3 0
3 years ago
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What is the best approximation for the area of a circle with a diameter of 13 meters?
Illusion [34]
First, find the radius of the circle. The radius of a circle is half the diameter. r=13/2=6.5 

Second, use the equation A=pi * r^2 to find the area of the circle. 
A=(3.14) * (6.5^2) = 132.665m^2 

so the answer is 132.7 m^2. 
4 0
3 years ago
Need HELP ASAP/ Cant get this wrong!!
Pavlova-9 [17]

Answer:

B

Step-by-step explanation:

It's most probably B

6 0
3 years ago
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