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14-02-2020
Mathematics

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Multiply the following polynomials. 3x3(5x2+4x) Question 1 options:
8x6+7x3

15x6+12x4
15x6+12x3
15x5+12x4
8x5+7x4
15x5+12x3

Respuesta :

sam4040 sam4040

20-02-2020

Answer:

[tex]15x^5+12x^4[/tex]

Step-by-step explanation:

[tex]Given,\\\\=3x^3(5x^2+4x)\\\\=3x^3\times5x^2+3x^3\times4x\\\\=15(x^3\times x^2)+12(x^3\times x) \ \ \ \ \ \ \ \ \ \ \ (x^m\times x^n=x^{m+n})\\\\=15x^5+12x^4[/tex]

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