DaisyMoon DaisyMoon

23-05-2017
Mathematics

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2. Which expression is equivalent to 3x(-4x² + 5x - 8) - 6(x² - 5x + 7)?
A. 12x³ - 9x² + 6x - 42
B. -12x³ + 9x² + 6x - 42
C. -12x³ - 54x² + 6x - 42
D. -27x³ - 6x² + 6x - 42

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kphung76127 kphung76127

24-05-2017

It is answer choice B. Using the distributive property, -12x^3+15x^2-24x-6x^2+30x-42. Then combine like terms.

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