Answer:
k² - 18k + 81
Step-by-step explanation:
Using the given model then
(k - 9)² with a = k and b = 9
= k² - 2(k)(9) + 9²
= k² - 18k + 81
Soo what is the question is there more to this
Take half of the coeff. of x (which is 6), and then square the result: 3^2 = 9.
Then <span>x^2-6x + 9 - 9, and
x^2 - 6x + 9 is a perfect square trinomial.
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$300 a month should be correct
<span>You'd do 729÷3=243, then 243÷3=81. The number is 81. I hope this helps!</span>
