Question 1196616
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Hi
The length of a rectangle is twice it's width.
width w
length 2w
If the width is reduced by 1cm and the length is reduced by 2cm, 
the area will be 15cm².
A = length*width
(2w-2)(w-1) = 15cm²
Solve for w, rounding answer as instructed 
2w^2 -4w + 2 = 15

Wish You the Best in your Studies.
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