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ziro4ka [17]
3 years ago
15

Solve the following equation by making an appropriate substitution. x Superscript negative 2 Baseline minus 2 x Superscript nega

tive 1 Baseline minus 15 equals 0 Make an appropriate substitution and rewrite the equation in quadratic form. Let uequals xz-1 x Superscript negative 1​, then the quadratic equation in u is u^2-2u-15(-5)(u+3) (u-5 )(u+3 ).
Mathematics
1 answer:
IrinaK [193]3 years ago
7 0

Answer:

  u^2-2u-15 = 0

Step-by-step explanation:

If you make the substitution ...

  u equals x Superscript negative 1 Baseline

then you can rewrite the equation as shown above.

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Answer:

Perimeter = 18 units

Step-by-step explanation:

one side = 4

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other side = √25 = 5

Perimeter = (2 x 4) + (2 x 5) = 18 units

4 0
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A: 7x - 3x +10<br> B:+4x²+66-4<br> A-B=
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3 years ago
Simplify: 10 • 12 + - 15 divided by 5 + 2 (9-4)
Ket [755]
Alright. So the problem is

10*12+-15/5+2(9-4)

Lets break down what we can for now

First focus on parenthesized, multiplying, and dividing in the problem.

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120+-3+2*5

So the next step, we see 2*5 and a negative -3 on top of a positive symbol.

2*5=10

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7 0
3 years ago
Which table represents a linear function? y=3,7,11,15 y=3,8,15,21 y=3,9,3,9 y=3,9,27,81?
steposvetlana [31]

The table that represents a linear function is y=3,7,11,15

<h3>How to determine the table?</h3>

For a table to represent a linear function, the table must have a constant rate of change i.e. a common difference

From the list of options, we have:

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Read more about linear functions at:

brainly.com/question/4025726

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6 0
2 years ago
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