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- A square picture has a side length of 20 centimeters. You trim x centimeters off
two adjacent sides of the picture.
a. Write a polynomial that represents the area of the trimmed picture.
b. Show how you can use the polynomial in part (a) to find the area of the
trimmed picture when you cut 5 centimeters off the two adjacent sides.



Answer :

Answer:

Step-by-step explanation:

Original area  =  20 x 20

a) New area =  ( 20-x)(20-x) = ( 20-x)^2  = x^2 -40x+400

b) when x = 5 :      5^2 - 40(5) + 400 = 225 cm^2

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