Question:

Geometry help! PLEASE!?

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Write each expression without parentheses and shorten it as much as possible....

1. 2a+4(7+5a)

2. 4(3x+2)-5(7x+5)

3. x(x+5)

4. 2x+x(x+6)

Write in the simplest form.

1. 7r+3(6+2r)+9

2. 5(8y+4)+3(2y+9)

3. 2x^2+7x+3x+5

4. -6x^2+16x-7

I have about 20 more of these but these are the main ones I could not figure out for the life of me! Thanks!

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4 ANSWERS


  1. 1.  2a + 28 +5a : 7a + 28

    2. 12x + 8 - 35x + 25 : 33 -23X

    3. x^2 + 5x

    4. 2x + x^2 + 6x : 8x + x^2

    --

    1. 27 +13r

    2. 46y +47

    3. 5 +10x + 2x^2

    4. -7 + 16x + -6x^2

    on nubmers 1 and 2 and 4 i simplified it after the ':'


  2. 1. 2a+4(7+5a)

    2a + 28 + 20a

    22a + 28

    2. 4(3x+2)-5(7x+5)

    12x + 8 - 35x -25

    -23x -17

    3. x(x+5)

    x² + 5x

    4. 2x+x(x+6)

    2x + x² + 6x

    x² + 8x

    Write in the simplest form.

    1. 7r+3(6+2r)+9

    7r + 18 + 6r + 9

    13r + 27

    2. 5(8y+4)+3(2y+9)

    40y + 20 + 6y + 27

    46y + 47

    3. 2x^2+7x+3x+5

    2x² + 10x + 5

    4. -6x^2+16x-7

    -6x² + 16x - 7


  3. 1.)  2a+28+20a (distribute the 4 inside parentheses).

          22a+28 (combine like factors)

    2.) 12x+8-(35x+25)

         12x+8-35x-25

         -23x-17

    3.)  x^2+5x

    4.)  2x+x^2+6x

         x^2+8x

          

  4. 1.  22a+28 just use the distributive property and then add the like terms.

    2. -23x+33

    3.x(x+5)= x^2+5x

    4.8x+x^2

    1.13r+27

    2. 46y+47

    3. 2x^2+10x+5

    the last one is already the simplest form.

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