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China normal university printing plate seventh grade mathematics first semester first lesson first exercise answer 47 pages 22 questions.
The square of x is -5x+ 1=0 and the square of x is+1=5x.
The square of x+half of the square of x = the square of x+1/x-2.
={(x squared+1)/x} squared -2=(5x/x) squared -2.
=25-2=23
The fourth power of X+the fourth power of X = the square of (the square of X+the square of X)-2 = the square of 23 -2=527.