anonymous
  • anonymous
Which polynomial represents a difference of cubes? x^3 -64 4x^3 -1 8x^3 +27 4x^3 -125
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
@welshfella
welshfella
  • welshfella
a cube is the result when a number or variable is multiplied by itself 3 times for example the cube of x = x*x*x = x^3 the cube of 2 is 8 because 2 * 2* 2 = 8 and 2 is called the cube root of 8
welshfella
  • welshfella
a difference, of course, is when one number or variable is subtracted from another

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welshfella
  • welshfella
So which one do you think is difference of 2 cubes?
welshfella
  • welshfella
a few more cubes are 3^3 = 27 4^3 = 64 5^3 = 125
anonymous
  • anonymous
x^3-64?
welshfella
  • welshfella
right
welshfella
  • welshfella
is 4x^3 a perfect cube?
anonymous
  • anonymous
yea
welshfella
  • welshfella
Ah caught you there! x^3 is one but 4 is not 4 is a perfect square But 8x^3 is a cube 2x*2x*2x = 8x^3
anonymous
  • anonymous
lol oh ok. Thank u.
welshfella
  • welshfella
yw

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