Assume units are one centimeter for each grid line. A polygon has the following vertices: Q(-5,-7), R(-3,-2) and S(6,-6). Find the area of the polygon using the area by decomposition method. Show your work for all components.

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step-by-step explanation:

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step-by-step explanation:

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answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

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