Question

add 2x(5x² - 3x + 1) and 4x (2x + 3x² -4)​

Answer 1

For answer see the attached image

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Answer 2

Answer:

[2x(5x² - 3x + 1)] +  [4x (2x + 3x² -4)​]$= 22x^3 + 2x^2 -6x$

Step-by-step explanation:

2x(5x² - 3x + 1) =2x( 5x²)  -2x( 3x)  + 2x(1)

$= 10x^3 - 6x^2 + 2x$

4x (2x + 3x² -4)​= 4x (2x) + 4x (3x²) - 4x (4)

$= 8x^2 + 12x^3 - 8x\\= 12x^3 + 8x^2 - 8x$

add 2x(5x² - 3x + 1) and 4x (2x + 3x² -4)​

$= (10x^3 - 6x^2 + 2x) + (12x^3 + 8x^2 - 8x)\\= 10x^3 - 6x^2 + 2x + 12x^3 + 8x^2 - 8x\\= 10x^3+ 12x^3 - 6x^2+ 8x^2 + 2x - 8x\\= (10 + 12)x^3 + (-6 + 8)x^2 + (2 -8)x\\= 22x^3 + 2x^2 -6x$