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nataly862011 [7]
2 years ago
13

Find a quadratic equation which has double root = 9. Write the quadratic form in the simplest standard form? x^2 +bx+c.

Mathematics
1 answer:
yarga [219]2 years ago
7 0

The quadratic equation for an equation with double roots 9 is : x^{2}-18x+81 = 0.

what is a Quadratic equation?

A quadratic equation is an Algebraic equation with the highest power of its variable as 2.

It can be solved by several methods : Factorization, completing the square and graphical methods.

Analysis

if 9 is the double root of the equation, it means x = 9 or  x = 9

So (x-9)(x-9) are factors

Therefore,

(x-9)(x-9) = 0

x^{2} - 9x-9x + 81 = 0

x^{2} -18x+81 = 0

in conclusion, the quadratic equation of the double root 9  is:  x^{2} -18x+81 = 0

Learn more about Quadratic equations : brainly.com/question/1214333

#SPJ1

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kondor19780726 [428]

Answer:

No real roots

Step-by-step explanation:

Given

7x² + 5x + 1 = 0 ← in standard form

with a = 7, b = 5, c = 1

To determine the nature of the roots use the discriminant

Δ = b² - 4ac

• If b² - 4ac > 0 then roots are real and distinct

• If b² - 4ac = 0 then roots are real and equal

• If b² - 4ac < 0 then the roots are not real

Here

b² - 4ac = 5² - (4 × 7 × 1) = 25 - 28 = - 3

Thus the 2 roots are not real

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3 years ago
Which number is irrational?<br> 16.5%<br> 0.0675<br> 8 3/4<br> 3.14
eimsori [14]

Answer:

3.14

Step-by-step explanation:

it will go on foreever

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3 years ago
Please answer this question i really want answers :(
vekshin1

Based on the hints of distinguishing between <em>radical</em> and <em>non-radical</em> numbers, we have the following lists:

  1. \sqrt{3}, 2.\overline{2}, 2.5, \sqrt{5}
  2. 3.01, 3.\overline{01},3.\overline{1}, \sqrt{9}
  3. -4.\overline{1}, - 4.1, 4.01, \sqrt{17}
  4. - 2.5,  -\sqrt{5}, \sqrt{6}, 2.5

<h3>How to order numbers from least to greatest</h3>

In this question we must order sets of numbers in ascending order. A hint consists in comparing <em>non-radical</em> numbers with the <em>closest</em> <em>radical</em> numbers whose results are integers.

In consequence, we obtain the following orders:

  1. \sqrt{3}, 2.\overline{2}, 2.5, \sqrt{5}
  2. 3.01, 3.\overline{01},3.\overline{1}, \sqrt{9}
  3. -4.\overline{1}, - 4.1, 4.01, \sqrt{17}
  4. - 2.5,  -\sqrt{5}, \sqrt{6}, 2.5

To learn more on sets: brainly.com/question/18877138

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2 years ago
Calculate 41% 0f 51kg
vlabodo [156]
20.91

51 x 0.41 = 20.91
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3 years ago
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Answer:

Step-by-step explanation:

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