3 years ago

In which choice is

Mathematics

1 answer:

____ [38]3 years ago

7 0

I think the answer is C

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Find the root of <img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B2x%20%7B%20%7D%5E%7B2%7D%20%7D%20%20%2B%20x%20%2B%20%20%5Csq

artcher [175]

Answer:

The root of x = -2 + √2

Step-by-step explanation:

Step(i):-

Given $\sqrt{2x^{2} } + x +\sqrt{2} = 0$

⇒ $\sqrt{2} } ( x^2 ) ^{\frac{1}{2} } + x +\sqrt{2} = 0$

⇒ $\sqrt{2}x + x +\sqrt{2} = 0$

⇒ $(\sqrt{2} + 1) x = - \sqrt{2}$

$x = \frac{-\sqrt{2} }{(\sqrt{2} + 1)}$

Step(ii):-

Rationalizing

$x = \frac{-\sqrt{2} }{(\sqrt{2} + 1)} X \frac{(\sqrt{2} - 1)}{(\sqrt{2} - 1)}$

Apply ( a-b ) ( a+b) = a²-b²

$x = \frac{-\sqrt{2}(\sqrt{2} -1) }{(\sqrt{2})^{2} - 1^{2} )} = \frac{-(2-\sqrt{2} }{2-1}$

The root of x = -2 + √2

6 0

3 years ago

A cable is wrapped tightly around a circle having radius 5 centimeters. this same cable is then taken off the circle and 3 more

zhenek [66]

No because a radius 6 or seven of them to transform

7 0

3 years ago

Which of the following best represent the graph of the inequality shown below?

zmey [24]

Answer:

B) x>-3

Step-by-step explanation:

B) x>-3

8 0

3 years ago

Just 32, 34 and 36 please

Vinil7 [7]

Answer:

32 is k=2.2

34 is h=20

36 is x=1

3 0

4 years ago

How do you do 3x (3X+6) please list how to do in order please. thanks!

Nadusha1986 [10]

Do what? If you mean to find when it equals zero...

By inspection you can see that if x=0 or 2 the expression is equal to zero...

You multiply each term in the parentheses by the term outside the parentheses...like:

3x*3x+3x*6 which is equal to:

9x^2+18x If you meant to expand it....

9x(x+2) If you meant to factor it completely

8 0

3 years ago

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