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3 years ago

Find the solutions x^2=18

Mathematics

2 answers:

iren [92.7K]3 years ago

6 0

Answer:

x₁ = -3√2

x₂ = 3√2

Step-by-step explanation:

x² = 18

x ± 3√2

x = -3√2

x = 3√2

Hope this helped! :)

koban [17]3 years ago

3 0

Answer:

x₁ = -3√2 , x₂ = 3√2

Step-by-step explanation:

x² = 18 ⇔ x = √18 or x= -√18

√18 = √[9•2] = √9•√2 = 3•√2 = 3√2

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What is the distance between the points (21 , 13) and (3 , 13) in the coordinate plane?

Oxana [17]

Answer:

$\displaystyle d = 18$

General Formulas and Concepts:

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Exponents
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Step-by-step explanation:

Step 1: Define

Identify

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Point (3, 13)

Step 2: Find distance d

Simply plug in the 2 coordinates into the distance formula to find distance d

Substitute in points [Distance Formula]: $\displaystyle d = \sqrt{(3-21)^2+(13-13)^2}$
[√Radical] (Parenthesis) Subtract: $\displaystyle d = \sqrt{(-18)^2+(0)^2}$
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[√Radical] Add: $\displaystyle d = \sqrt{324}$
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3 years ago

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AlladinOne [14]

Answer:

Step-by-step explanation:

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3 years ago