Then, placing z = y, and z2 for y, we have,
which gives, by taking the positive root, which is the one corresponding to the arithmetical enunciation,
22 49, and, consequently, y2 49, or y = 7.
The value of x is easily found, and is equal to 9.
Make, a = 800, n = 200, and r = 2;
a = 100, b = 200, and n = 80,
a = 800, b = 1200, and n = 50.
and, making a = 70, n = 21, and r = 3, we have,
and, making a = 70, 7 = 10, and n = 21,
and, making a = 4, n = 8, and r = 8,*
and, making a = 4, l = 60, and n = 8,
First, to find the last term. We have,
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