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Express (x – 1)(x + 2)(2x + 2) in standard form

User Avern
by
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1 Answer

3 votes

Answer:

2x³ + 4x² - 2x - 4

Explanation:

Expand the first pair of factors then multiply by (2x + 2)

= (x² + x - 2)(2x + 2) → distribute terms

= x²(2x + 2) + x(2x + 2) - 2(2x + 2)

= 2x³ + 2x² + 2x² + 2x - 4x - 4 ( collect like terms )

= 2x³ + 4x² - 2x - 4 ← in standard form


User RealCheeseLord
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