3 years ago

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

Mathematics

1 answer:

n200080 [17]3 years ago

4 0

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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