Multiply the following polynomials. 3x3(5x2+4x) Question 1 options: 8x6+7x3 15x6+12x4 15x6+12x3 15x5+12x4 8x5+7x4 15x5+12x3

asked Feb 2, 2021 21.8k views

2 votes

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

8x6+7x3

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

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5 votes

Answer:

15x^5+12x^4

Explanation:

$Given,\\\\=3x^3(5x^2+4x)\\\\=3x^3*5x^2+3x^3*4x\\\\=15(x^3* x^2)+12(x^3* x) \ \ \ \ \ \ \ \ \ \ \ (x^m* x^n=x^(m+n))\\\\=15x^5+12x^4$

Ijw answered Feb 8, 2021