Question

Select the correct answer.

Answer 1

Answer:

To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of b

.

(b2)2=(9)2

Add the term to each side of the equation.

x2+18x+(9)2=0+(9)2

Simplify the equation.

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x2+18x+81=81

Factor the perfect trinomial square into (x+9)2

.

(x+9)2=8

its d, 18