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Alika [10]
3 years ago
14

Which equation has the solutions X=1 +-SQRT 5?

Mathematics
2 answers:
Vesna [10]3 years ago
8 0

Answer:

D is correct. x^2-2x-4=0

Step-by-step explanation:

We are given the root of the equation

x=1+\pm \sqrt{5}

If we are given solution of the equation then find equation using formula.

If a and b are the solution of equation then equation would be (x-a)(x-b)=0

Here, a=1+\sqrt{5} , b=1-\sqrt{5}

Equation form would be (x-1-\sqrt{5})(x-1+\sqrt{5})=0

Now we simplify the above equation to get correct option.

x^2-x+x\sqrt{5}-x+1-\sqrt{5}-x\sqrt{5}+\sqrt{5}-5=0

x^2-2x-4=0

So, D is correct.  x^2-2x-4=0

Natali [406]3 years ago
8 0

Answer: D

Step-by-step explanation:

2020edg

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Step-by-step explanation:

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QUESTION 7<br> Solve for x.<br> (3x + 32)<br> (5x-8)<br> O a. 3<br> b. 12<br> O c. 20<br> O d. 19.5
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Answer:

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Step-by-step explanation:

If you set both equations equal to each other and solve for x, you will get 20.

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pav-90 [236]

Answer:

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

1.

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                            -----------------

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2.

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-----------

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3.

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