Suppose the area of a square is xsquared - 10x + 25. What is the perimeter of the square?
2x - 5
10
4x - 20
x + 5
2007-04-30 14:13:07 · 3 answers · asked by hillio m 1 in Science & Mathematics ➔ Mathematics
Area is x^2 - 10x + 25 = (x-5)^2. Since it's a square, both sides must have length (x-5) (assuming x > 5) and therefore the perimeter is 4(x-5) = 4x - 20.
2007-04-30 14:16:48 · answer #1 · answered by Scarlet Manuka 7 · 0⤊ 0⤋
You can factor the above equation to obtain (x - 5) (x - 5). Since this is area which is side times side each side is (x - 5). There are 4 sides to a square so the perimeter would be 4(x - 5) = 4x - 20.
Hope this helps!
2007-04-30 14:18:02 · answer #2 · answered by Brian.. 2 · 0⤊ 0⤋
Area=x^2-10x+25=(x-5)(x-5)
Length of one side = x-5
Perimeter= 4(x-5) = 4x-20
Perimeter is 4x-20
2007-04-30 14:17:39 · answer #3 · answered by gudspeling 7 · 0⤊ 0⤋