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Question

Solve the following equations:
x+x21xx21xx21x+x21=8xx23x+2.

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Solution

x+x21xx21xx21x+x21=8xx23x+2(x+x21)2(xx21)2(xx21)(x+x21)=8xx23x+2x2+x21+2xx21x2x2+1+2xx21x2x2+1=8xx23x+24xx21=8xx23x+2xx21=2xx23x+2=0xx212xx23x+2=0x(x212x23x+2)=0

x=0 and x212x23x+2=0

x21=2x23x+2x21=4(x23x+2)3x212x+9=03x29x3x+9=03x(x3)3(x3)=0(3x3)(x3)=0x=1,3

So the values of x are 0,1 and 3



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