Posted by erin on Wednesday, January 23, 2013 at 12:35pm.
A = (2x-4)(2x+4) = 128.
4x^2-16 = 128
4x^2 = 144
x^2 = 36
X = +-6.
2x-4 = 2*6 - 4 = 8 Mi. = Ht.
2x+4 = 2*6 + 4 = 16 Mi = Base.
.
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