2 years ago

Express (x+9)^2 as a trinomial in standard form.

Mathematics

2 answers:

slava [35]2 years ago

7 0

$(x+9)^2\\\\=x^2 + 2\cdot 9 \cdot x + 9^2\\\\=x^2 +18x+81$

Andreyy892 years ago

5 0

Answer:

x^2 + 18x + 81

Step-by-step explanation:

(x+9) (x+9)

then distributive property

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