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serious [3.7K]
2 years ago
11

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

Mathematics
2 answers:
maw [93]2 years ago
8 0

Answer:

x² + 6x + 9

Step-by-step 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

Svetllana [295]2 years ago
6 0
Step-by-step explanation below:

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3 years ago
The moon is about 240,000 miles from Earth. What is the distance written as a whole number multiplied by a power of ten?
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