07-05-2021
Mathematics

contestada

Simplify (12x3 - 8x2) - (3x3 + 9x2 + x - 7).

Respuesta :

therivkah10 therivkah10

09-05-2021

Answer:

9x^3-17x^2-x+7

Step-by-step explanation:

Distribute the negative you'll get

(12x^3-8x^2)+(-3x^3-9x^2-x+7)

Combine like terms

12x^3-3x^3=9x^3 , -8x^2-9x^2=-17x^2 , -x , +7

Putting it all together:

9x^3-17x^2-x+7

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