Respuesta :

Answer:

64x³ - 432x² + 972x - 729

Step-by-step explanation:

Write the statement into an expression

(4x - 9)³

Now multiply that out...

(4x - 9)²(4x - 9)

Foil the first binomial

 (16x² - 72x + 81)(4x - 9)

Multiply the two polynomials together

    16x²(4x) - 72x(4x) + 81(4x) + 16x²(-9) - 72x(-9) + 81(-9)

64x³ - 288x² + 324x - 144x² + 648x - 729

combine like terms...

64x³ - 432x² + 972x - 729

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