SOLUTION: a rectangle painting 60 cm by 90 cm is to e surrounded by a mat tha is w cm wide. find the total area of the painting and the mat. put your answer in standered form.
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Question 126732: a rectangle painting 60 cm by 90 cm is to e surrounded by a mat tha is w cm wide. find the total area of the painting and the mat. put your answer in standered form.
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
(60+2w)(90+2w)
5400+180w+120w+4w^2
4w^2+300w+5400
4(w^2+75w+1350)
4(w+30)(w+45)
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