Page 69 - aljaber

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. 82 = 64 7

. wxyz
w2 + x 2 + y2 + z2 = 50
.0 < w < x < y < z < 8

z =7

12 + 22 + 32 = 14

12 + 22 + 32 + 72 = 63 > 50

w2 + x 2 + y2 = 14 z =6
w =1
.1236 y =3 x =2

y =4 w2 + x 2 + y2 = 25 z =5
x =3
.w = 0 z =4
. 1234

1236

1× 2 × 3 × 6 = 36

:( ) ()

.

( ) (2 × 4 × 6 × 8) ×(2 × 4 × 6 × 8)×

(2 × 4 × 6 × 8)× × (2 × 4 × 6 × 8)

(2 × 4 × 6 × 8 )10 = ( 384 )10
. 410