Answer:
x³ - 12x² + 48x - 64
Step-by-step explanation:
1.Expand by distributing sum groups.
x²(x - 4) - 8x(x - 4) + 16(x - 4)
2.Expand by distributing terms.
x³ - 4x² - 8x(x - 4) + 16(x - 4)
3.Expand by distributing terms.
x³ - 4x² - (8x² - 32x) + 16(x - 4)
4.Expand by distributing terms.
x³ - 4x² - (8x² - 32x) + 16x - 64
5.Remove parentheses.
x³ - 4x² - 8x² + 32 + 16x - 64
6.Collect like terms.
x³ + (-4x² - 8x²) + (32 + 16x) - 64
7. Simplify.
x³ - 12x² + 48x - 64
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