GRE
Exam
Numerical Ability
Algebra
If ab=x, and a/b=y and ab does not equal zero, then a² − b² = ? (A) x(y-1)(y+1)/y (B) xy - (x/y) (C) x² - y² (D) (y+x)(y-x)/x
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- ab = x ; a/b = y-->a^2 =xy & b^2 = x/y
Therefore, a^2 - b^2 = xy - (x/y)-->Option B - 5 years agoHelpfull: Yes(0) No(0)
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