Multiplying by Binomials (Grade 9)

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Multiplying by Binomials

1. 
Multiply the binomials.
[math](x-11)(x+11)[/math]
  1. [math]x^2 +121[/math]
  2. [math]x^2 - 121[/math]
  3. [math]x^2 +22x +121[/math]
  4. [math]x^2 -22x +121[/math]
2. 
Multiply. [math] (x - 5)(2x + 4)[/math]
  1. [math]-6x [/math]
  2. [math] 2x^2 - 20[/math]
  3. [math] 2x^2 - 26[/math]
  4. [math]2x^2 - 6x - 20 [/math]
3. 
Multiply: [math](6n - 4) (4n + 3)[/math]
  1. [math]12n^2 + 18n - 12[/math]
  2. [math]24n^2 - 2n + 12[/math]
  3. [math]24n^2 + 2n - 12[/math]
  4. [math]10n^2 -16n +12[/math]
4. 
Multiply: [math](4b + 3) (b - 12)[/math]
  1. [math]4b^2 - 51b -36[/math]
  2. [math]4b^2 + 51b + 36[/math]
  3. [math]4b^2 - 45b - 36[/math]
  4. [math]5b^2 -45b -36[/math]
5. 
Multiply: [math](x + 8) (x - 8)[/math]
  1. [math]x^2 + 64x - 64[/math]
  2. [math]x^2 +16x - 64[/math]
  3. [math]2x +64[/math]
  4. [math]x^2 - 64[/math]
6. 
Multiply the binomials.
[math](x-9)(x+7)[/math]
  1. [math]x^2 +16x - 63[/math]
  2. [math]x^2 +2x +63[/math]
  3. [math]x^2 -2x -63[/math]
  4. [math]x^2 -16x -63[/math]
7. 
Multiply: [math](x-2)(2x^2-3x-1)[/math]
  1. [math]-2x^3+3x^2+x[/math]
  2. [math]-2x^2+3x+1[/math]
  3. [math]2x^3-7x^2-7x-2[/math]
  4. [math]2x^3+x^2-7x-2[/math]
  5. [math]2x^3-7x^2+5x+2[/math]
8. 
Multiply: [math](x+2)(2x^2-3x+1)[/math]
  1. [math]-2x^3+3x^2+x[/math]
  2. [math]-2x^2+3x+1[/math]
  3. [math]2x^3-7x^2-7x-2[/math]
  4. [math]2x^3+x^2-5x+2[/math]
  5. [math]2x^3-7x^2+5x+2[/math]
9. 
Multiply.

[math](2-x)(2x^2-3x-1)[/math]
  1. [math]2x^2-2x-2[/math]
  2. [math]2x^3+4x^2-2x-1[/math]
  3. [math]-2x^3+7x^2-5x-2[/math]
  4. [math]2x^3-7x^2+5x+2[/math]
  5. [math]7x^2-1[/math]
10. 
Multiply and simplify: [math](x-1)(x^2-x+1)[/math]
  1. [math]x^3+1[/math]
  2. [math]x^3-1[/math]
  3. [math]-x^3+2x^2-2x+1[/math]
  4. [math]x^3-2x^2+2x-1[/math]
  5. None of these are correct

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