GRE Exam Numerical Ability Algebra

Number of solutions for the below equation is x^2+2x+1=0 is

a) one b)two c)three d)four e)no

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GRE Other Question

This is a QC question.

A) |x^2+x-3|
B)|3-x-x^2| Given z=2x, y=3z and xy≠0. What is the value of (6x²+y²)/(xz+yz) ? A)4 B)3 C)5 D)1/3