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23 Jul 2019, 09:39
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Please help me to understand what to do to factor this (to get to the last line):
\(x^2 y^2\) – xy = 6 given
\(x^2 y^2\) – xy – 6 = 0 subtract 6 from both sides
( xy + 2)( xy – 3) = 0 factor
\(x^2 y^2\) – xy = 6 given
\(x^2 y^2\) – xy – 6 = 0 subtract 6 from both sides
( xy + 2)( xy – 3) = 0 factor
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MidhilaMohan
GMAT 1: 680 Q49 V34
Posts: 112
23 Jul 2019, 10:00
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irinagollubeva
after the second step
rewrite the equation as
\(x^2 y^2\) – 3xy+2xy – 6 = 0 (we get it by factoring)
xy(xy-3)+2(xy-3)=0
(xy+2)(xy-3)=0
hope it helps
