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kangurek1343

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(x+2y-1)-(3x-y+5)+(2x-3y+4)=
2x(3a-2c)+3a(-2x+1)+4cx=
(5x+3y)(x-4y-3)=
-4(a+3)(a-4)=
(x^2-x+1)(x-1)=
(0,8a-0,3b)(0,2a+0,7b)=
(3/7z-18)(3/7z+18)=
(3y^2+8z^3)(3y^2-8z63)=
(-1/2ab+4c)(-1/2ab-4c)=
(2x-4)(x+8)-(2x+1)=
(2x-3)-(3x+1)4=
(x-7)(x+2)-(x+2)(x-3)=
4(1/2x+3x^2-4)-2(x+1)=
^=potęga

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Rozwiązania

  • sonar

    (x+2y-1)-(3x-y+5)+(2x-3y+4)=

    = x + 2y - 1 - 3x + y - 5 + 2x - 3y + 4=

    =x - 3x + 2x + 2y + y - 3y - 1- 5 + 4 =

    = - 2




    2x(3a-2c)+3a(-2x+1)+4cx=

    = 6ax - 4cx + (-6ax +3a) + 4cx=

    = 6ax - 4cx - 6ax + 3a + 4cx=

    = 6ax - 6ax - 4cx + 4cx + 3a=

    = 3a




    (5x+3y)(x-4y-3)=

    = 5x^2 - 20xy + 15x + 3xy - 12y^2 - 9y=

    = 5x^2 - 12y^2 - 20xy + 3xy + 15 x - 9y=

    = 5x^2 - 12y^2 - 17xy +15x - 9y





    -4(a+3)(a-4)=

    = -4(a^2 - 4a + 3a - 12)=

    = - 4a^2 + 16a - 12a + 48=

    = - 4a^2 + 4a + 48





    (x^2-x+1)(x-1)=

    = x^3 - x^2 - x^2 + x +x - 1=

    = x^3 - 2x^2 + 2x -1





    (0,8a-0,3b)(0,2a+0,7b)=

    = 0,16a^2 + 0,56ab- 0,06ab - 0,21b^2=

    = 0,16a^2 - 0,21b^2 + 0,5ab



    (3/7z-18)(3/7z+18)=

    = 9/49z^2 + 18*3/7z - 18*3/7z - 18^2=

    = 9/49z^2 +54/7z - 54/7z- 324=

    = 9/49z^2 - 324




    (3y^2+8z^3)(3y^2-8z^3)=

    = 9y^4 - 24y^2z^3 + 24Y62z^3 - 64z^6=

    = 9y^4 - 64z^6





    (-1/2ab+4c)(-1/2ab-4c)=

    = 1/4a^2b^2 + 4/2abc - 4/2abc - 16c^2=

    = 1/4 a^2b^2c^2 - 16c^2





    (2x-4)(x+8)-(2x+1)=

    = 2x^2 - 16x - 4x - 32 - 2x - 1=

    = 2x^2 - 16x - 4x - 2x - 32 - 1=

    = 2x^2 - 22x - 33






    (2x-3)-(3x+1)4=

    2x - 3 - (12x + 4)=

    = 2x - 3 -12x - 4=

    = 2x - 12x - 3 - 4=

    = - 10x - 7





    (x-7)(x+2)-(x+2)(x-3)=

    = (x^2 +2x - 7x - 14) - (x^2 -3x + 2x - 6)=

    = x^2 - 5x - 14 - x^2 + 3x - 2x + 6=

    = x^2 - 5x - 14 - x^2 +x + 6=

    = x^2 - x^2 - 5x + x - 14 + 6=

    = -4x - 8





    4(1/2x+3x^2-4)-2(x+1)=

    = (4/2x + 12x^2 - 16) - (2x + 2)=

    = 2x + 12x^2 - 16 - 2x - 2=

    = 12x^2 +2x - 2x - 16 - 2=

    = 12x^2 - 18

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