jakezimmerman847 jakezimmerman847

25-07-2021
Mathematics

contestada

1. Giles thinks that -5x²(3x - 4) simplifies to 15x² + 20x². Explain what mistakes he made. What is the
correct answer?

Respuesta :

jeremiahkevinm jeremiahkevinm

25-07-2021

Answer:

The mistake was minus sign before the 15 and putting 15x² instead of 15x³.

The correct answer is:

[tex]-5x^{2} (3x-4)\\ = -15x^{3} + 20x^{2}[/tex]

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