(polynomials) multiply. (x^2-5x)(2x^2+x-3)
a. 2x^4 - 9x^3 - 9x^2 - 15x
b. 2x^4 + 9x^3 - 8x^2 + 15x
c. 4x^4 + 9x^3 - 8x^2 + 15x
d. 2x^4 - 9x^3 - 8x^2 + 15x

2x^4 - 9x^3 -8x^2 + 15x

Step-by-step explanation:

(x^2-5x)(2x^2+x-3) distribute first

2x^4

x^2 + x = x^3

5 * 2x^2 x= 10x^3

5x^1+1 = 5x^2

5 * 3x = 15x Put them all together

2x^4 + x^3 - 3x^2 - 10x^3 - 5x^2 + 15x Like terms

2x^4 + x^3 -10x^3 - 3x^2- 5x^2 + 15x Add similar terms

= 2x^4 + x^3 - 10x^3 - 8x^2 + 15x more adding terms

2x^4 - 9x^3 -8x^2 + 15x

Hope my answer has helped you, if not i'm sorry.

For this case we must multiply the following expression:

We apply distributive property term to term taking into account that:

For powers of the same base, we place the same base and add the exponents:

We add similar terms:

OPTION D

the answer is 489

step-by-step explanation:

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3