SOLUTION: Find x then find the perimeter of the rectangle. Base = 3x Height = x-1 Diagonal = 3x+1 What I've already tried: {{{ (x-1)^2 + (3x)^2 = (3x+1)^2 }}} {{{

SOLUTION: Find x then find the perimeter of the rectangle. Base = 3x Height = x-1 Diagonal = 3x+1 What I've already tried: {{{ (x-1)^2 + (3x)^2 = (3x+1)^2 }}} {{{

Algebra.Com

Question 583339: Find x then find the perimeter of the rectangle.
Base = 3x
Height = x-1
Diagonal = 3x+1

What I've already tried:

Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
(3x)^2 = 3 * x * 3 * x = 9x^2

x^2 - 2x + 1 = 6x + 1

x^2 - 8x = 0 ___ x (x - 8) = 0
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