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2 years ago

Solve (x + 1)2 – 4(x + 1) + 2 = 0 using substitution. u = x 4(x +1) x +1 (x + 1)2

Mathematics

1 answer:

marta [7]2 years ago

4 0

no substituion only rea numbersStep-by-stion:

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Consider a circle whose equation is x2 + y2 – 2x – 8 = 0. Which statements are true? Select three options. The radius of the cir

FromTheMoon [43]

The statements which are correct about the equation of circle $x^{2} +y^{2}-2x-8=0$ are 1) The radius of the circle is 3 units,2) The center of the circle lies on the x axis,5) The radius of this circle is the same the radius of the circle whose equation is $x^{2} +y^{2} =9$ .

Given the equation of circle be $x^{2} +y^{2}-2x-8=0$ .

We are required to find the appropriate statements related to the equation $x^{2} +y^{2}-2x-8=0$ .

$x^{2} +y^{2}-2x-8=0$ can be written as under:

$x^{2} +y^{2} -2x+1-9=0$

$x^{2} +1^{2}-2x+y^{2} -9=0$

$(x-1)^{2}+y^{2}$ -9=0

$(x-1)^{2} +y^{2} =9$

$(x-1)^{2}+y^{2} =3^{2}$

Equation of a circle usually in the form $x^{2} +y^{2} =a^{2}$ in which a is radius.

From the comparison of both the equations we get that radius is 3 units.

From the equation point will be (1,0). It is on the x axis.

Hence the statements which are correct about the equation of circle $x^{2} +y^{2}-2x-8=0$ are 1) The radius of the circle is 3 units,2) The center of the circle lies on the x axis,5) The radius of this circle is the same the radius of the circle whose equation is $x^{2} +y^{2} =9$ .

Learn more about radius at brainly.com/question/24375372

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1 year ago

Help plz I really need the help

Colt1911 [192]

Answer:

the answer might be either one of the four

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3 years ago

Two congruent figures have the same perimeter. O sometimes O Never O Always

Tanzania [10]

Answer:

always

Step-by-step explanation:

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3 years ago

Note: We can only use the expanded power rule when there isn't any addition or subtraction. In the example below you need to mul

Simora [160]

21 hope this helps and your welcome

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3 years ago

Simplify the expression. 5√2+√18 a) 8√2 b) 14√2 c) 18√2 d) 6√18

lubasha [3.4K]

Answer:

$5 \sqrt{2} + \: 3 \sqrt{2} = \: 8 \sqrt{2}$

the answer is a

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3 years ago