(x+8)*(x-8) = 512 ///
x²-8x+8x-64 = 512 ///
x²-8x+8x = 576 ///
x² = 576 ///
x = 24 ///
a = 24 + 8 = 32 m
b = 24 - 8 = 16 m
(x+8)*(x-8) = 512 ///
x²-8x+8x-64 = 512 ///
x²-8x+8x = 576 ///
x² = 576 ///
x = 24 ///
a = 24 + 8 = 32 m
b = 24 - 8 = 16 m