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Novay_Z [31]
3 years ago
7

Which Polynomial represents the difference below?

Mathematics
2 answers:
Ad libitum [116K]3 years ago
8 0

Answer:

The answer is B

Step-by-step explanation:

5x² +9x +3 - (6x ² -3x)

this is easier if you distribute the negative in front of the perenthesis so...

5x² +9x +3 + (-6x² + 3x)

then you just combine the terms with the same variable and exponent

-x² +12x +3

pishuonlain [190]3 years ago
3 0

Answer:

5x² +9x+3−(6x²−3x)

1 Remove parentheses.

5x²+9x+3−6x²+3x

2 Collect like terms.

(5x² −6x² )+(9x+3x)+3

3 Simplify.

-x² +12x+3 which is B

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Robert should get D. 8281.25 pesos in exchange.

Explanation:

  • Robert is bringing 625 U.S. dollars with him to Mexico. He needs to exchange the money he has with him to Mexico's currency i.e. from U.S. dollars to Mexican pesos.
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What type of polynomial is 3x+x to the second power +4
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The answer is quadratic.


A quadratic equation takes this form:


<em>ax^2+ bx + c</em>


The "a,""b,"and "c" represent numerical coefficients.


This is how your equation looks:


3x + x^2 + 4


Now it is standard that we organize the polynomial in descending order so it will look like this:


x^ 2 + 3x + 4


(commutative property of addition says that the arrangement will not affect the result)


It matches the quadratic polynomial form.


<em>* You might be thinking, x to the second power has no number next to it though, well actually it does. The numerical coefficient of x to the power of two in this case is actually 1. It's just that in math, it is not necessary to put the one anymore. It is already assumed. </em>

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