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FromTheMoon [43]
2 years ago
15

HELP SOLVE THANK YOU!

Mathematics
2 answers:
aleksklad [387]2 years ago
8 0

<u>Let's first move everything, the constants and variables to one side</u>

    x^2-2=2x ⇒ x^2-2x-2=0

<u>The second form is in the general form of the quadratic equation</u>:

 ⇒ ax^2+bx+c = 0

  • a ⇒ 1
  • b ⇒ -2
  • c ⇒ -2

<u>To find the value of x, we can use the quadratic formula:</u>

  ⇒<em> look at the diagram attached</em>

<em />

<em>   </em>x = \frac{-b-\sqrt{b^2-4ac} }{2a} =\frac{2-\sqrt{(-2)^2-4(1)(-2)} }{2*1} =\frac{2-\sqrt{4+8} }{2} =\frac{2-\sqrt{12} }{2} =\frac{2-2\sqrt{3}}{2} =1-\sqrt{3}

  x = \frac{-b+\sqrt{b^2-4ac} }{2a} =\frac{2+\sqrt{(-2)^2-4(1)(-2)} }{2*1} =\frac{2+\sqrt{4+8} }{2} =\frac{2+\sqrt{12} }{2} =\frac{2+2\sqrt{3}}{2} =1+\sqrt{3}  

                      /\

                      | |

                      | |

                  <u>Answer</u>

<u>To answer the question, just answer in the order I solved it, because the question asks you to put the answer in ascending order which means from least to greatest.</u>

<u />

Hope that helps!

Lera25 [3.4K]2 years ago
4 0

Answer:

Solution 1: 1+1\sqrt{3}

Solution 2: 1-1\sqrt{3}

Step-by-step explanation:

x^2-2=2x

x^2-2x-2=0

Use quadratic equation.

(-b+-\sqrt{b^2-4ac})/2a

(2+-\sqrt{(-2)^2-4*1*-2})/2

(2+-\sqrt{(4+8}))/2

(2+-\sqrt{12})/2

Solution 1: (2+2\sqrt{3})/2=1+1\sqrt{3}

Solution 2: 1-1\sqrt{3}

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