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RECHENWEGGGGGGGGGGG PLSSSSSSS

GuestNov 20, 2012

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GuestNov 20, 2012

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Can someone help me at GLeichung idk how to do it.. pls..

GuestNov 20, 2012

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If u want to know something amazing u have to scroll to the bottom to find it!!!
have fun!

actually i had many things to say down there and it didnt quite work out so sorry for ur dissapointment

GuestNov 20, 2012

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same here nothing is going on!

GuestNov 20, 2012

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GuestNov 20, 2012

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sorry dude
noooooooooooooooooooo clue

GuestNov 20, 2012

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sorry had to look
but i guess u didnt start yet so ill come back later

GuestNov 20, 2012

+3146

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(x+6) (x-6) = (x-2)²
x^2+6x-6x-36 = x^2-4x+4
x^2-36 = x^2-4x+4
| -x^2
-36 = -4x+4
|-4
-40 = -4x
| / -4
10 = x

adminNov 20, 2012

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GuestNov 20, 2012

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RECHENWEG BITTE.....

GuestNov 20, 2012

+3146

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[input](x+6)*(x-6) = (x-2)²[/input]

adminNov 20, 2012

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Es kann nur 20 10 13 oder -17 rauskommen eine von denen

GuestNov 20, 2012

+3146

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sin(x+ pi/6) + sin(x- pi/6 )= sqr(3/2)

lemma:
sin(a)+sin(b) = 2*sin( (a+b)/2 ) * cos( (a-b)/2 )

sin(x+ pi/6) + sin(x- pi/6 )= sqr(3/2)
2*sin( (x+ pi/6 +x- pi/6 )/2 ) * cos( (x+ pi/6 -(x- pi/6) )/2 ) =sqr(3/2)
2*sin( x ) * cos( pi/6 ) = sqr(3/2)
2*sin( x ) * sqrt(3)/2 = sqr(3/2)
2*sin( x ) = (sqr(3/2)) / (sqrt(3)/2)
2*sin( x ) = sqrt(2)
sin(x) = sqrt(2)/2

EdDad28:
Solve the equation on the interval [0,2pi)

x = acos( sqrt(2)/2 ) = pi/4

adminNov 20, 2012

+3146

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(x-5)^2 = (x+7)^2
x^2-10x+25 = x^2+14x+49
| -x^2
-10x+25 = 14x+49
| -14x
-24x+25 = 49
| -25
-24x = 24
| /-24
x = -1

[input](x-5)^2 = (x+7)^2[/input]

adminNov 20, 2012

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[quote="Zimt"]Wie rechne ich (x-5)² = (x+7)² (will andere Aufgaben alleine lösen klappt aber iwie nicht..)
Help pls

GuestNov 20, 2012

+3146

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[inputrad]sin( x ) = 0.8599[/inputrad]

check:
[inputrad]sin( 1.035073739378042 )[/inputrad]

adminNov 20, 2012

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Stimmt
25x²-35x²+48=25x2-21 |-25x2
-35x²+48=-21 |-49
-35x=-70 |/-35
x=2

auch??

GuestNov 20, 2012

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Habs mit der vorherigen Antwort vom Admin gelöst vielen vielen Dank.
Also bei mir kam raus x= 2

GuestNov 20, 2012

+3146

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(5x-7)²=25x²-21
(5x-7)^2=25x^2-21
25x^2-70x+49 = 25x^2-21
| - 25x^2
-70x+49 = -21
| -49
-70x = -70
| /-70
x = 1

[input](5x-7)^2=25x^2-21[/input]

adminNov 20, 2012

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Hallelujah Danke!

GuestNov 20, 2012

+3146

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( x-4 ) ²= x²-16
( x-4 )^2= x^2-16
( x-4 )*( x-4 ) = x^2-16
x^2-8x+16 = x^2-16
| -x^2
x^2-8x+16-x^2 = x^2-16-x^2
x^2-8x+16-x^2 = -16
-8x+16 = -16
| -16
-8x+16-16 = -16-16
-8x = -32
| /-8
-8x = -32
x = 4

[input]( x-4 )^2= x^2-16[/input]

adminNov 20, 2012

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lol:
-3+(-17235647)= ?
wer die antwort ennst bitte schreiben

Wozu ist denn die Seite ein eigener Taschenrechner?

GuestNov 20, 2012

+3146

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[input]-3+(-17235647)[/input]

adminNov 20, 2012

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i see no problem in your post..

GuestNov 20, 2012

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