03dking 03dking

20-02-2019
Mathematics

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(x - 5)(x^2 + 4x - 2)

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Ammimochi Ammimochi

20-02-2019

Distribute sum groups

x(x^2 + 4x - 2) - 5(x^2 + 4x - 2)

Distribute

x^3 + 4x^2 - 2x - 5(x^2 + 4x - 2)

Distribute

x^3 + 4x^2 - 2x - (5x^2 + 20x - 10)

Simplify brackets

x^3 + 4x^2 - 2x - 5x^2 - 20x + 10

Collect like terms

x^3 + (4x^2 - 5x^2) + (-2x - 20x) + 10

Simplify

x^3 - x^2 - 22x + 10

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