gbryleigh gbryleigh

01-06-2020
Mathematics

contestada

2 Points
Multiply the polynomials.
(x + 3)(3x2 + 8x + 9)
A. 3x3 + x2 + 33x+ 213
B. 3x3 + 17x2 - 15x+27
C. 3x3 + 17x2 + 33x-27
D. 3x3 + 17x2 + 33x + 27

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Аноним Аноним

01-06-2020

Answer:

3x³ + 17x² + 33x + 27

Explanation:

(x + 3)(3x² + 8x + 9)

= (x + 3)(3x² + 8x + 9)

= (x)(3x²) + (x)(8x) + (x)(9) + (3)(3x²) + (3)(8x) + (3)(9)

= 3x³ + 8x² + 9x + 9x² + 24x + 27

= 3x³ + 17x² + 33x + 27

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