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Express (x + 3)² as a trinomial in standard

User Xpedobearx
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2 Answers

3 votes

Answer:

x² + 6x + 9

Explanation:

(x + 3)²

= (x + 3)(x + 3)

each term in the second factor is multiplied by each term in the first factor , that is

x(x + 3) + 3(x + 3) ← distribute parenthesis

= x² + 3x + 3x + 9 ← collect like terms

= x² + 6x + 9 ← in standard form

User Dmoney
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4 votes
Step-by-step explanation below:
Express (x + 3)² as a trinomial in standard-example-1
User Praveen E
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3.6k points