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Learn how Kamakshi achieved a GMAT 675 with an impressive 96th %ile in Data Insights. Discover the unique methods and exam strategies that helped her excel in DI along with other sections for a balanced and high score.
20 Apr 2017, 23:41
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A
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If x ≠ 1, which expression is equal to \(\frac{x(x − 1) − 2(x + 1) + 3(x + 5)}{(x − 1)}\) ?
A. (x^2 + 13)/(x − 1)
B. (x^2 + 17/(x − 1)
C. (x^2 + x + 12)/(x − 1)
D. (x^2 + x + 5)/(x − 1)
E. 13/(x − 1)
A. (x^2 + 13)/(x − 1)
B. (x^2 + 17/(x − 1)
C. (x^2 + x + 12)/(x − 1)
D. (x^2 + x + 5)/(x − 1)
E. 13/(x − 1)
21 Apr 2017, 01:25
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[x(x−1)−2(x+1)+3(x+5)]/(x-1)
above can be written as
[x^2 - x - 2x - 2 + 3x +15]/(x-1)
can be further simplified to
(x^2 + 13)/(x-1)
Answer is A. (x^2 + 13)/(x − 1)
above can be written as
[x^2 - x - 2x - 2 + 3x +15]/(x-1)
can be further simplified to
(x^2 + 13)/(x-1)
Answer is A. (x^2 + 13)/(x − 1)
21 Apr 2017, 02:58
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x^2-x-2x-2+3x+15= (x^2+13)/(x-1)
When there is no pattern i.e. we can't relate the expression to any identity then simplify the expression as there are chances that some values would be cancelled.
When there is no pattern i.e. we can't relate the expression to any identity then simplify the expression as there are chances that some values would be cancelled.
