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3 years ago

I need to know what the variable of x is please explain

Mathematics

2 answers:

Evgesh-ka [11]3 years ago

6 0

I think its x=36 hope this explains it

Kisachek [45]3 years ago

3 0

The answer is: x = 36

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

solniwko [45]

For this case we have to:

Let $u = x + 1$

So:

$u ^ 2-4u + 2 = 0$

We have the solution will be given by:

$u = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2 (a)}$

Where:

$a = 1\\b = -4\\c = 2$

Substituting:

$u = \frac {- (- 4) \pm \sqrt {(- 4) ^ 2-4 (1) (2)}} {2 (1)}\\u = \frac {4 \pm \sqrt {16-8}} {2}\\u = \frac {4 \pm \sqrt {8}} {2}\\u = \frac {4 \pm \sqrt {2 ^ 2 * 2}} {2}\\u = \frac {4 \pm2 \sqrt {2}} {2}$

The solutions are:

$u_ {1} = \frac {4 + 2 \sqrt {2}} {2} = 2 + \sqrt {2}\\u_ {2} = \frac {4-2 \sqrt {2}} {2} = 2- \sqrt {2}$

Returning the change:

$2+ \sqrt {2} = x_ {1} +1\\x_ {1} = 1 + \sqrt {2}\\2- \sqrt {2} = x_ {2} +1\\x_ {2} = 1- \sqrt {2}$

Answer:

$x_ {1} = 1 + \sqrt {2}\\x_ {2} = 1- \sqrt {2}$

3 0

3 years ago

Read 2 more answers

Can you please solve this????

bezimeni [28]

Answer:

thx for the points

Step-by-step explanation:

8 0

2 years ago

Please help please !!!!!!!!!!!

balu736 [363]

8(2)-y=4
16-y=4d
-1y/-1=-12/-1
y=12

(16,12)

3 0

3 years ago

Identify which of these quadrilateral's are parallelograms.

nlexa [21]

Answer:

Opposite Sides equal

Opposite sides parallel

Step-by-step explanation:

5 0

3 years ago

He difference of 29 and n

almond37 [142]

Answer:

Step-by-step explanation:

n can be represented as 1.

29 - 1 = 28

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3 0

2 years ago

Read 2 more answers