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MissTica
3 years ago
13

What is the simplest form of x2+5x-36/x2-16

Mathematics
1 answer:
Dmitry_Shevchenko [17]3 years ago
6 0

Answer:

(x^4 + 5 x^3 - 16 x^2 - 36)/x^2

Step-by-step explanation:

Simplify the following:

x^2 + 5 x - 16 - 36/x^2

Put each term in x^2 + 5 x - 16 - 36/x^2 over the common denominator x^2: x^2 + 5 x - 16 - 36/x^2 = x^4/x^2 + (5 x^3)/x^2 - (16 x^2)/x^2 - 36/x^2:

x^4/x^2 + (5 x^3)/x^2 - (16 x^2)/x^2 - 36/x^2

x^4/x^2 + (5 x^3)/x^2 - (16 x^2)/x^2 - 36/x^2 = (x^4 + 5 x^3 - 16 x^2 - 36)/x^2:

Answer: (x^4 + 5 x^3 - 16 x^2 - 36)/x^2

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Aaron had 5/7 as much money as Remus. After Aaron spent 3/5 of his money on a laptop.
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Step-by-step explanation:

let Remus' money be = y

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3 years ago
Evaluate the expression. Assume that all the angles are in Quadrant I. (cos (arctan √3/7))
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0.971

Step-by-step explanation:

Given the expression (cos (arctan √3/7)) which all lies in the first quadrant. Note that all the trigonometry identities (sin, cos and tan) are all positive in the first quadrant.

From the expression given

(cos (arctan √3/7)), we need to get the expression in parenthesis first.

Let y = (cos (arctan √3/7))

If u = arctan √3/7

Then y = cos(u) .... 1

Let's get the value of u first

u = arctan √3/7

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u = 13.896°

Substituting u = 13.896° into equation 1, we will have;

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y = 0.971.

Hence the expression (cos(arctan√3/7)) is equivalent to 0.971

3 0
2 years ago
Which expression is equal to the polynomial below? 2x4 + 5x3 – 8x – 20 x3(2x + 5) + 4(2x – 5) x3(2x + 5) – 4(2x + 5) x3(2x – 5)
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An internet search engine looks for a keyword in 9 databases, searching them in a random order. Only 5 of these databases contai
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Probability that it is in 2 of the first 4 = 5C2 / 126 = 10/126
Probability that it is in 3 of the first 4 = 5C3 / 126 = 10/126
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Probability that it is in at least 2 of the first 4 = 10/126 + 10/126 + 5/126 = 25/126

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3 years ago
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