| Autor |
Beitrag |
    
Alexander
Unregistrierter Gast
| | Veröffentlicht am Mittwoch, den 04. September, 2002 - 16:15: | 
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Hallo brauche schnelle Hilfe !!
Aufagbe:Mache so gleichnamig,dass der Nenner 15 ist.
a)3/7,1/2,b)1/2,1/10,c)3/4,7/2,d)4/9,5/12,e)4/12,2/3
erkläre mir bitte den Rechenweg !
Danke |
Karsten (coolman2000)
Neues Mitglied
Benutzername: coolman2000
Nummer des Beitrags: 1
Registriert: 09-2002
| | Veröffentlicht am Mittwoch, den 04. September, 2002 - 16:46: |
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Helft mir biiiiiiiitte!!
HA Mathe:
21/6
a: (a²+3)(2-a)
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b: (a²+b)(a-b²)
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c: (c+d²)(c²-d)
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d: (e²+f²)(g²-h²)
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e: (x-y²)(y+z)
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f: (u²+v)(v+1)
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g: (4p-3q)(3q+4p²)
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h: (p -2q²)(3p²+q )
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i: (pq-r²)(r+pq)
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k: (uv-w²)(uw+v²)
-----------------------------------------------------------------------
l: (uv-w²)(
-----------------------------------------------------------------------
m: (-u +2uv²)(u-v)
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n: (3/2x²+2/5y)(2/3x-5/2y²)
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o: (3/4xy-z²)(1/4xz+y²)
-----------------------------------------------------------------------
p: (2yz+1/2y²)(2yz²-1/2y²)
-----------------------------------------------------------------------
7)
a: (x+1)(x+3)-x²
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b: (x-1)(x-5)-10x
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c: (x+2)(x-4)-x²+2x+6
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d: (3x-2)(x+1)-3x²
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e 2x+1)(x-2)+x(x-3)-(x-1)x
-----------------------------------------------------------------------
f: (2z-3)(2+z)-(z-1)z
-----------------------------------------------------------------------
g: (a-4)(a+6)-a(a+1)-a(1-a)
-----------------------------------------------------------------------
h: 3p(p+1)+2(p-1)(p+4)-5p²-3p
-----------------------------------------------------------------------
i: (3a+4)(3a-1)+(2a-5)(8+4a)
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k: (x+1)(6x+1)-3(3-x)(2x-1)
-----------------------------------------------------------------------
8)
a: (4x+8)(8+2y)-5*(2x-5y+4)
_______________________________________________
b: (7x+4y)(9x+8y)-(12x-5y)(17x+8y)
_______________________________________________
c: 26pq-(9p+8q)(5p-2q)-(4q-3p)(15p-4q)
_______________________________________________
d: (3/2u-v)(2/5u+v)-4(1/2u-1/2v)(1/5u+12/5v) |
Olaf (heavyweight)
Neues Mitglied
Benutzername: heavyweight
Nummer des Beitrags: 2
Registriert: 09-2002
| | Veröffentlicht am Mittwoch, den 04. September, 2002 - 18:16: |
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Hallo Karsten!
Beispiel zu 6.):
(a^2+3)(2-a)
=a^2*2+a^2*(-a)+3*2+3*(-a)
=2a^2-a^3+6-3a
=-a^2+2a^2-3a+6
Beispiel zu 7.):
(x+1)(x+3)-x^2
=x*x+x*3+1*x+1*3-x^2
=x^2+3x+x+3-x^2
=4x+3
Beispiel zu 8.):
(4x+8)(8+2y)-5(2x-5y+4)
=4x*8+4x*2y+8*8+8*2y-5(2x-5y+4)
=32x+8xy+64+16y-5(2x-5y+4)
=32x+8xy+64+16y-5*2x+5*5y-5*4
=32x+8xy+64+16y-10x+25y-20
=22x+41y+8xy+44
=8xy+22x+41y+44
Gruß,Olaf
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