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Question #af025

1 Answer

Aug 21, 2016

$6 x^{3} - 17 x + 10$ $6x^3-17x+10$

Explanation:

As the format used was not very clear I have assumed this is what the expression looks like.

Remove the bracket first and then collect like terms.

$12 x^{3} - 3 (2 x^{3} + 4 x - 1) - 5 x + 7$ $12x^3 -3(2x^3 +4x-1) - 5x +7$

= $12 x^{3} - 6 x^{3} - 12 x + 3 - 5 x + 7 notice the sign changes$ $12x^3 -6x^3 -12x +3 -5x +7" notice the sign changes"$

= $6 x^{3} - 17 x + 10$ $6x^3-17x+10$

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