a square piece of gift wrapping paper with a side length of x inches that he used to wrap a present. First he cut 6 inches off the right side of the paper and discarded the rectangular scrap. Next he cut 3 inches off the top of the paper and again discarded the rectangular scrap. What expression represents the total area in square inches of the scraps that he discarded?
2 answers
4 minutes after your first post of this ?
A1 = x * x = X^2 = Area before cutting.
L = x-6 = Length after cutting.
W = x-3 = Width after cutting.
A2 = L*W = (x-6)*(x-3) = x^2 - 3x -6x + 18 = x^2 - 9x + 18. = Area remaining.
A1 - A2 = x^2 - (x^2 -9x+18) = 9x-18 = 9(x-2) in^2 discarded.
L = x-6 = Length after cutting.
W = x-3 = Width after cutting.
A2 = L*W = (x-6)*(x-3) = x^2 - 3x -6x + 18 = x^2 - 9x + 18. = Area remaining.
A1 - A2 = x^2 - (x^2 -9x+18) = 9x-18 = 9(x-2) in^2 discarded.
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