Processing math: 54%
Home / Aptitude Tests / Mathematics / For what value of y ...
For what value of y is the expression \(\frac{y + 2}{y^{2} -...

For what value of y is the expression y+2y23y10 undefined?

A.

y = 0

B.

y = 2

C.

y = 3

D.

y = 5

E.

y = 10

Correct answer is D

y+2y23y10 

y23y10=0y25y+2y10=0

y(y5)+2(y5)=0

(y5)(y+2)=0

y+2(y5)(y+2)=1y5

At y = 5, the expression \frac{y + 2}{y^2 - 3y - 10} is undefined.