icvelyy
icvelyy icvelyy
  • 14-09-2020
  • Mathematics
contestada

Evaluate the expression below for x = 6 and y = 3
3( x-y )[tex])^{3}[/tex] -[tex]x^{3}[/tex]

Respuesta :

Pumkin14
Pumkin14 Pumkin14
  • 14-09-2020

Answer:

2x^3 +9x^2 y+9xy^2 +3y^3

Step-by-step explanation:

STEP

1

Equation at the end of step 1

3 • (x - y)3 - x3

STEP

2

2.1 Evaluate : (x-y)3 = x3-3x2y+3xy2-y3

Checking for a perfect cube :

2.2 2x3-9x2y+9xy2-3y3 is not a perfect cube

Final result :

2x^3 + 9x^2 y+ 9xy^2 + 3y^3

(I hope this helps you)

Answer Link
sarahnewb sarahnewb
  • 14-09-2020
It would be 3x^3 -9x^2 +9xy^2 -3y^3
Exclamation: I just did the math
Answer Link

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