Please submit your concern

Explanation:

Instead of solving algebraically, solve the question by first substituting x = 1. You will get one original value and three values in the options. Square each value from the options and match it with the original value of the expression.

Original expression:1+x2+(1+x2+x4)

=1+(1)2+[1+(1)2+(1)4]

=1+1+3=2+3

Option 1:

121+x+x2+1-x+x2

=121+1+12+1-1+12

=3+12

Now, square this value.

=3+1+232=4+232=2+3

Hence, option (a).

Feedback

Help us build a Free and Comprehensive Preparation portal for various competitive exams by providing us your valuable feedback about Apti4All and how it can be improved.


© 2024 | All Rights Reserved | Apti4All